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

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Question 840838: Give the constant term and the coefficient of x in the linear expression 8x+rx.
I have no idea what to do I thought 8x was the coefficient and r the constant but I was wrong. Any help is much appreciated, Thanks

Click here to see answer by josgarithmetic(39617) About Me 

Question 840860: Put the following equation in slope-intercept form: y-2=5/4(x-1)
Click here to see answer by Fombitz(32388) About Me 

Question 840979: The graphs of y = 4x and y = 2x – b intersect at the origin. What is the value of b?
Click here to see answer by Fombitz(32388) About Me 

Question 840985: Find the slope of the following equation
1. y= 1/8x-3
2.y=19
3.y=1/2x-9

Click here to see answer by sheldonbbtrocks(115) About Me 

Question 840986: can you help me solve. this
one question (3m^2n^4/9m^3n)^-2

Click here to see answer by Fombitz(32388) About Me 
Question 840986: can you help me solve. this
one question (3m^2n^4/9m^3n)^-2

Click here to see answer by ewatrrr(24785) About Me 

Question 840987: Find the equation of the line parallel to 4x + 9y = 14 and passing through the point (0,5).
Click here to see answer by sheldonbbtrocks(115) About Me 
Question 840987: Find the equation of the line parallel to 4x + 9y = 14 and passing through the point (0,5).
Click here to see answer by Fombitz(32388) About Me 

Question 840802: Hello. My teacher asked us today to specifically explain what result f(-3) represents. Any help please?
Click here to see answer by Fombitz(32388) About Me 

Question 841072: what would -3x<-6 look like on a line graph?
Click here to see answer by ewatrrr(24785) About Me 

Question 841119: Solve the following linear system using the Echelon Method.
x+2y− z= −1
2x − 3y + 2z = 15
−3x+ y+4z=−19

Click here to see answer by stanbon(75887) About Me 

Question 841212: Determine the difference quotient f(x+h)-f(x)/ h. f(x)=9x^2-2

Click here to see answer by josgarithmetic(39617) About Me 

Question 840739: hello, My math teacher asked this question today and I couldn't figure it out.
Explain what result f(-3) represents?
Please help!

Click here to see answer by richard1234(7193) About Me 

Question 841316: y=2
x|0|2|4|
y| | | |

Click here to see answer by Fombitz(32388) About Me 

Question 841263: For the following function, determine the difference quotient. f(x+h)-f(x)/ (divided by) h. f(x)=x^2-5x
Click here to see answer by Fombitz(32388) About Me 

Question 841341: in the shelving system includes a box-module, which may be made of thin plate with dimensions of 80 cm in length, and 50 cm in width. The plate is bent into shape that has length of 80-2x, with of 50 and height of x.
a) Estimate the height of x, given the box volume is as large as possible.
b) You must determine the volume of the box .
Hint: order of quadratic equation and use of the vertex formula

Click here to see answer by stanbon(75887) About Me 

Question 841357: 5x + 2y = 10
please find the line intercepts thank you

Click here to see answer by Phillips54(20) About Me 
Question 841357: 5x + 2y = 10
please find the line intercepts thank you

Click here to see answer by ranger(12) About Me 

Question 841214: Determine the difference quotient f(x+h)-f(x)/h. f(x)=x^2-5x
Click here to see answer by Fombitz(32388) About Me 

Question 841225: After figuring out what y equals when told to write the equation in function form. What are the steps to figure out what the three x variables are.
Ex:
y = 4 x tchart y y = 3/2(x)+ 1
4
4
4
how would you find the x variables to plot it on a graph.

Click here to see answer by Fombitz(32388) About Me 

Question 841368: what is the equation of a line that passes through (-7, 1) and is parallel to y = x + 4
what is the equation of a line that passes through (4, 2) and is perpendicular to y = 1/2x + 1

Click here to see answer by Fombitz(32388) About Me 

Question 841390: Hello, I need help with this problem. I haven't done algebra in a while and I need to pass this course. I am stuck.
Find the slope-intercept equation of the line with the following properties
Parallel to the line 𝑥=−14; containing the point (−5,6).

Click here to see answer by josgarithmetic(39617) About Me 

Question 841141: 0 0
Which of the following are point-slope equations of the line going through (9,3) and (-3,-6)? Check all that apply.
y - 3 = 4/3 (x - 9)
y + 6 =3/4 (x + 3)
y - 3 = 3/4 (x - 9)
y - 6 = 4/3 (x - 3)
y - 6 = 3/4 (x - 3)
y + 6 =4/3 (x + 3)

Click here to see answer by Fombitz(32388) About Me 

Question 841415: Please help. This is another problem that I am having challenges with.

Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle.
𝑥2+𝑦2+10𝑥−18𝑦=−102

Click here to see answer by Fombitz(32388) About Me 

Question 841474: Please help me solve the graph of y-3= -(x-4)
Click here to see answer by josgarithmetic(39617) About Me 

Question 841571: Find the slope of the line that passes through (90, 97) and (21, 7).

Click here to see answer by Alan3354(69443) About Me 

Question 841582: (Can someone please help me with this question?)
In 1992, the life expectancy of males in a certain country was 71.1 years. In 1997, it was 73.4 years. Let E represent the life expectancy in year t and let t represent the number of years since 1992.
The linear function E(t) that fits the data is E(t)=___?t+__?(Round to the nearest tenth)
Use the function to also predict the life expectancy of males in 2003.
E(11)=___?(Round to the nearest tenth)

Click here to see answer by ewatrrr(24785) About Me 
Question 841582: (Can someone please help me with this question?)
In 1992, the life expectancy of males in a certain country was 71.1 years. In 1997, it was 73.4 years. Let E represent the life expectancy in year t and let t represent the number of years since 1992.
The linear function E(t) that fits the data is E(t)=___?t+__?(Round to the nearest tenth)
Use the function to also predict the life expectancy of males in 2003.
E(11)=___?(Round to the nearest tenth)

Click here to see answer by josmiceli(19441) About Me 

Question 841590: (Can someone please help me with this question?, thanks)
Determine whether the graphs of the given pair of lines are perpendicular.
5x=6
-5y=10
Are they perpendicular?
yes
no

Click here to see answer by ewatrrr(24785) About Me 
Question 841590: (Can someone please help me with this question?, thanks)
Determine whether the graphs of the given pair of lines are perpendicular.
5x=6
-5y=10
Are they perpendicular?
yes
no

Click here to see answer by richwmiller(17219) About Me 

Question 841625: (Can someone please help me with this question?, thanks)
Find an equation of the line containing the given pair of points.
(-3,0) and (0,2)
What is the equation of the line?
y=___?
(Type your answer in slope-intercept form. Use integers or fractions for any numbers in the expression.)

Click here to see answer by ewatrrr(24785) About Me 

Question 841698: Identify the solution(s) of the system of equations, if any
-3x-4y=2
8y =-6x-4

Click here to see answer by MathLover1(20849) About Me 

Question 841693: y=-5x+4

Click here to see answer by jim_thompson5910(35256) About Me 

Question 841694: I'm having a problem with putting together this word problem and I am not sure how to solve this. I am really confused. Can someone help?
A nurse must be careful not to inject a drug too quickly into a patient’s IV. If the drug is injected at the maximum rate of 0.03 cc per second, and the total amount to be injected is 15 cc,
a. Create an equation that tells the amount injected as a function of time (in seconds)
b. Determine the time required to complete the injection.

Click here to see answer by rfer(16322) About Me 

Question 841766: please i have a problem with the following equation and don't know how to go about it and the deadline for me to submit this answer is early tommorow
1) Solve the linear equation 2x+3y=1, 5x+7y=3.
a)x=2, y=1
b)x=4, y=-2
c)x=2, y=-2
d)x=2, y=-1
2)Solve the linear equations 2x+4y=10 and 3x+6y=15.
x=5-2a,y=a
x=5-2a,y=4
x=5,y=a
x=-2a,y=a
3)Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Sove for c

3
1
5
7
4)Solve the linear equation : 2x+3y=3, x-2y=5 and 3x+2y=7.

x=2 and y=-1
x=3 and y=1
x=3 and y=-1
x=1 and y=-1
5)Solve the set of linear equations by Guassian elimination method : a+2b+3c=5, 3a-b+2c=8, 4a-6b-4c=-2. Find c

4
5
9
10
6)Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Sove for b

9
-3
5
-4
7)Solve the set of linear equations by Guassian elimination method : a+2b+3c=5, 3a-b+2c=8, 4a-6b-4c=-2. Find b

4
-5
-3
5
8)Solve the set of linear equations by Guassian elimination method : a+2b+3c=5, 3a-b+2c=8, 4a-6b-4c=-2. Find a

1
4
5
-1
9)Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Solve for a

2
4
7
3

Click here to see answer by ewatrrr(24785) About Me 

Question 841852: (Can someone help me with this question please?)
Solve the following system of equations.
x+4y=5
x=6-4y
What is the solution of the system?
a) The solution of the system is ___? (Type an ordered pair)
b) There is no solution

Click here to see answer by ewatrrr(24785) About Me 

Question 841887: (Can someone help me with this question please?, thanks)
Graph the following equation, and if possible determine the slope.
y=-1
I just need to know the numbers to graph. I know that the slope is 0.

Click here to see answer by josgarithmetic(39617) About Me 

Question 841946: Determine if the function f(x)=x^3|4x| is even, odd, or neither
Click here to see answer by jim_thompson5910(35256) About Me 
Question 841946: Determine if the function f(x)=x^3|4x| is even, odd, or neither
Click here to see answer by richard1234(7193) About Me 

Question 841947: Consider the function f(x)= 4-x/(divided by) x+5 +. Algebraically determine the domain and all intercepts.

Click here to see answer by jim_thompson5910(35256) About Me 

Question 842061: 1.Ten less than the product of x and 9 is 8.
2.twice the difference of a number and 3 is the same as 1 added to three times the number. Find the number.

Click here to see answer by mxgirl22(39) About Me 

Question 842090: - find two equations in x and y, draw their graphs and solve graphically
q) In my pocket I have $1 and $2 coins. How many of each type do I have if I have 13 coins altogether and their total value is $20?

Click here to see answer by lwsshak3(11628) About Me 

Question 842130: Im trying to solve by elimination.
3x+4y=14
2x-3y=-19
I have been able to solve for X which is 2 but I'm not sure how or where to plug in X to find Y.
Thank you in advance

Click here to see answer by Fombitz(32388) About Me 
Question 842130: Im trying to solve by elimination.
3x+4y=14
2x-3y=-19
I have been able to solve for X which is 2 but I'm not sure how or where to plug in X to find Y.
Thank you in advance

Click here to see answer by ewatrrr(24785) About Me 

Question 842093: What the answer to this H^2=x*y
Click here to see answer by Fombitz(32388) 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