Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 1121114: what is the linear equation that has a line that passes through (1,-4) and has a slope that is undefined?
Click here to see answer by MathTherapy(10552) About Me 
Question 1121114: what is the linear equation that has a line that passes through (1,-4) and has a slope that is undefined?
Click here to see answer by Alan3354(69443) About Me 
Question 1121148: Determine the equation of the linear function having the given characteristics, writing the equation in slope-intercept form.
Perpendicular to the line 5x + 2y = 12 and containing the point (-7,-6).
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121148: Determine the equation of the linear function having the given characteristics, writing the equation in slope-intercept form.
Perpendicular to the line 5x + 2y = 12 and containing the point (-7,-6).
Click here to see answer by ikleyn(52781) About Me 
Question 1121147: Determine the equation of the linear function having the given characteristics, writing the equation in slope-intercept form.
Slope of -4/5, passing through (9,-2).
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121147: Determine the equation of the linear function having the given characteristics, writing the equation in slope-intercept form.
Slope of -4/5, passing through (9,-2).
Click here to see answer by ikleyn(52781) About Me 
Question 1121146: Determine the equation of the linear function having the given characteristics, writing the equation in slope-intercept form.
Passing through the point (6,3) and perpendicular to the line having x-intercept at -3 and y-intercept at 8
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121145: Determine the equation of the linear function having the given characteristics, writing the equation in slope-intercept form.
Passing through the point (-3,3) and parallel to the line having x-intercept at 5 and y-intercept at -2.
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121136: draw a line through the given point of (0,0) with the inclination of 75 degrees
Click here to see answer by ankor@dixie-net.com(22740) About Me 
Question 1121136: draw a line through the given point of (0,0) with the inclination of 75 degrees
Click here to see answer by Alan3354(69443) About Me 
Question 1121156: Noah and Ben are running in the Walker Street Fun Run. Noah runs at 7 mph, Ben at 5 mph. If they start at the same time, how long (in minutes) will it be before they are mile apart?
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121221: 9600ft summit elevation 14255, distance 15840
Click here to see answer by ikleyn(52781) About Me 
Question 1121269: The graph of which of the following will be perpendicular to the graph of y = 2x – 4?
Click here to see answer by solver91311(24713) About Me 
Question 1121272: Can you predict the temperature at which the pressure would equal zero? Please explain how you got to your conclusion.?
1. A chemist measured the pressure of a gas in atmospheres at different temperatures in °C:
Temp (°C) -136 -25 0 25 100 273
Pressure
(atm)
0.50 0.91 1.00 1.09 1.37 2.00
Click here to see answer by Alan3354(69443) About Me 
Question 1121315: What is the slope of the coordinates (9,3) (9,-1)?
Click here to see answer by Boreal(15235) About Me 
Question 1121315: What is the slope of the coordinates (9,3) (9,-1)?
Click here to see answer by solver91311(24713) About Me 
Question 1121398: If Maribel can do a project in three hours and Angelo can do the same project in x hours, which expression represents the rate of Angelo and Maribel working together?
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121399: If Maribel can do a project in three hours and Angelo can do the same project in x hours, which expression represents the rate of Angelo and Maribel working together?
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121434: A butcher decides to mix hamburger so it can be sold at a competitive price. If he mixes some that is 22% fat with some that is 10% fat, how many pounds of each type should he mix to get 80 pounds of hamburger that is 16% fat?
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121435: A cyclist traveled to her destination at an average rate of 15mph. By traveling 3 mph faster, she took 30 minutes less to return. What distance did she travel each way?
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121435: A cyclist traveled to her destination at an average rate of 15mph. By traveling 3 mph faster, she took 30 minutes less to return. What distance did she travel each way?
Click here to see answer by addingup(3677) About Me 
Question 1121432: A financial advisor advises Jennifer to invest her money equally in stocks and bonds. If the return on bonds is 4.5% and the return on the stocks is anticipated to be 7%, how much should she invest in each type of investment to make $2530 each year?
Click here to see answer by ikleyn(52781) About Me 
Question 1121451: Find the equation of the parabola in the form y= ax^2 + bx + c if it has the x intercepts of 3 and -6 and a y intercept of -9. Thank you :)
Click here to see answer by Boreal(15235) About Me 
Question 1121457: Shown below is the solution to the linear program for finding Player A's optimal mixed strategy in a two-person, zero-sum game.
OBJECTIVE FUNCTION VALUE = 3.500

VARIABLE
VALUE
REDUCED COSTS
PA1
0.050
0.000
PA2
0.600
0.000
PA3
0350
0.000
GAINA
3.500
0.000



CONSTRAINT
SLACK/SURPLUS
DUAL PRICES
1
0.000
−0.500
2
0.000
−0.500
3
0.000
0.000
4
0.000
3.500

a.
What is Player A's optimal mixed strategy?
b.
What is Player B's optimal mixed strategy?
c.
What is Player A's expected gain?
d.
What is Player B's expected loss?
Click here to see answer by ikleyn(52781) About Me 
Question 1121516: 3(4-5x)-2(x+4)=4
Click here to see answer by josgarithmetic(39617) About Me 
Question 1121580: R=5(c/a -0.3)


Click here to see answer by solver91311(24713) About Me 
Question 1121644: 1/5(3t-9)=t+9/10
Click here to see answer by Alex.33(110) About Me 
Question 1121699: Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b
(3,9);x+8y=5
Click here to see answer by MathLover1(20849) About Me 
Question 1121714: Using the discriminant or otherwise, find the value of k for which the equation 3kx^2 + 4x + 2=0 has equal roots
Click here to see answer by htmentor(1343) About Me 
Question 1121716: FInd the x^2 term in the expansion of (2 +3x)^2(4x +1)^2
Click here to see answer by Boreal(15235) About Me 
Question 1121716: FInd the x^2 term in the expansion of (2 +3x)^2(4x +1)^2
Click here to see answer by greenestamps(13200) About Me 
Question 1121715: Express 2x^2 +3x in the form ax(x + 1) + b(x + 1) + c
Click here to see answer by Boreal(15235) About Me 
Question 1121715: Express 2x^2 +3x in the form ax(x + 1) + b(x + 1) + c
Click here to see answer by greenestamps(13200) About Me 
Question 1121878: two lines passing through (3,2) make an angle of 45 degrees. If the slope of one of the line is 1, find the slope of the other line (two solutions)
Click here to see answer by greenestamps(13200) About Me 
Question 1121877: what acute angle does a line of a slope -3/2 make with a vertical line?
Click here to see answer by greenestamps(13200) About Me 
Question 1121876: A television camera is 30 ft from the sideline of a basketball court 94ft long. The camera is located 7ft from midcourt. Through what angle must it sweep in order to cover all action on the court?
Click here to see answer by greenestamps(13200) About Me 
Question 1121875: A cross section of a cottage, 18ft wide is an isosceles triangle. If the slope of a side is 1.75 and there is a second floor 8ft above the ground floor, what is the width of the second floor?
Click here to see answer by greenestamps(13200) About Me 
Question 1121922: Please help me see if I'm on the right track. I've come up with two different answers.
The length of a rectangle is 4 inches less than twice the width and the perimeter is 32. Find the dimensions of the rectangle.
What I did 1st attempt:
32=2(x)+2(2x-4)
32=2x+4x-8
32+8=2x+4x-8+8
40=6x
40/6 = 6x/6
20/3 = x

What I did 2nd attempt:
32=2(2x)+2(x-4)
32=4x+2x-4
32+4=4x+2x-4+4
36=6x
36/6 = 6x/6
6 = x







Click here to see answer by ikleyn(52781) About Me 
Question 1121939: Brianna and Kayla are competing for babysitting jobs in their neighborhood. Brianna charges $15 plus $2 per hour while Kayla charges $10 plus $3 per hour. Write the system of equations that describe both babysitting services
Click here to see answer by solver91311(24713) About Me 
Question 1122014: 3/8a-8=13
a=56
but how did it get to that number the calculator wasn't specific enough.
Click here to see answer by josgarithmetic(39617) About Me 
Question 1122014: 3/8a-8=13
a=56
but how did it get to that number the calculator wasn't specific enough.
Click here to see answer by MathTherapy(10552) About Me 
Question 1122062: I've being going round and round with this question, but cannot get it right.
The weight of a body 𝑤 varies inversely with the square of its distance from the center of Earth 𝑑. If a person weighs 90 pounds on the surface of Earth, what is the person’s weight 160 miles above the surface? (Assume that the radius of Earth is 4000 miles.)
In our text it says Inversely means multiply, and so I did,(yz=k):
90(160)^2=k
90(25600)=k
2304000=k
The part of the question that has me confused is when it talks about radius of the earth being 4000 miles.
I assumed it would be used as follows:
4000m/4000 = 2304000/4000
which gives an answer of: m = 576
This seems incorrect.
Any advice would be appreciated.


Click here to see answer by Alan3354(69443) About Me 
Question 1122062: I've being going round and round with this question, but cannot get it right.
The weight of a body 𝑤 varies inversely with the square of its distance from the center of Earth 𝑑. If a person weighs 90 pounds on the surface of Earth, what is the person’s weight 160 miles above the surface? (Assume that the radius of Earth is 4000 miles.)
In our text it says Inversely means multiply, and so I did,(yz=k):
90(160)^2=k
90(25600)=k
2304000=k
The part of the question that has me confused is when it talks about radius of the earth being 4000 miles.
I assumed it would be used as follows:
4000m/4000 = 2304000/4000
which gives an answer of: m = 576
This seems incorrect.
Any advice would be appreciated.


Click here to see answer by Theo(13342) About Me 
Question 1122066: I understand simple equations like " x + 8 = 6" and " x + 2 = 10".
x=-2 and x=8 because obviously 8+ 2 is 10. I just don't understand the steps it takes to do equations like 4 - 7x + 10 = 15 - 6x - 8
Please explain to me in detail the steps it takes to solve 4 - 7x + 10 = 15 - 6x - 8
Thank you
Click here to see answer by Alan3354(69443) About Me 
Question 1122066: I understand simple equations like " x + 8 = 6" and " x + 2 = 10".
x=-2 and x=8 because obviously 8+ 2 is 10. I just don't understand the steps it takes to do equations like 4 - 7x + 10 = 15 - 6x - 8
Please explain to me in detail the steps it takes to solve 4 - 7x + 10 = 15 - 6x - 8
Thank you
Click here to see answer by josgarithmetic(39617) About Me 
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045