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

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Question 570770: How would I solve this problem?
p(x)=x^2-2x+7... I have to find the domain of P

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

Question 178986: 3/x = 7/8
7x=3*8
7x=24
x=24/7=3 3/7

Click here to see answer by PaulBeckles(1) About Me 

Question 570801: I have several questions like the following that I cannot seem to get the correct answer.
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.
(3,6); x+7y=3.
I am missing a step when I try to solve so if I could get a detailed way to solve this that would be great.
Thank you.

Click here to see answer by mananth(16946) About Me 

Question 570844: find the equation that passes through the point (2,1) and perpendicular to the line y=5x-3

Click here to see answer by mananth(16946) About Me 

Question 570882: I need help with 6 problems, I have been trying to figure them out for 2 days now and have not been able too. Please help, here are the questions.
Find an equation of the line containing the given pair of points.
(1/4, -1/2) and (3/4, 6)
What is the equation of the line? y=
second question
Find an equation of the line having the given slope and containing the given point.
m=6/7, (1, -7)
The equation of the line is Y=
Third question
Find an equation of the line containing the given pair of points.
(-1, -2) and (-4, -6)
The equation of the line in slope-intercept from is y=
Fourth Question
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
(-4, 7); 4x=3y+2
The equation of the line is y=
Fifth question
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
(5, 7); 5x+y=4
the equation of the line is y=
Sixth question
Write an equation of the line containing the given point and perpendicular to the given line.
(5, -4); 4x+3y=8
The equation of the line is y=
I have no clue how to solve these problems, any help is greatly appreciated.
Thanks again

Click here to see answer by mananth(16946) About Me 

Question 570965: find the slope of a line parallel to y=-2/5=4/5
Click here to see answer by JBarnum(2146) About Me 

Question 570956:
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Question 571097: What is the slope of 3x=4y-2
Click here to see answer by stanbon(75887) About Me 

Question 571113: write an equation in slope intercept form of the line that passes through the point and is perpendicular to the graph and given equation .
Through (-2,-4) perpendicular to x-2y=4

Click here to see answer by mananth(16946) About Me 

Question 571112: Find the line containing P(3,0) and perpendicular to the x-axis.
Find the line containing P(-4,5) and parallel to x-axis.

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Question 571104: How do you find the slope of 4y= 3(y+2)
Click here to see answer by Maths68(1474) About Me 

Question 571138: I need help solving this word problem...I have been trying for 2 hours.
In 1920, the record for a certain race was 45.4 sec. In 1970, it was 44.4 sec.
Let R(t)=the record in the race and t=the number of years since 1920.
Find a linear function that fits the data
R(t)=
Round to nearest hundredth
What is the predicted record for 2003____sec
What is the predicted record for 2006?
In what year will the predicted record be 43.50 seconds?
Thanks so much!

Click here to see answer by mananth(16946) About Me 

Question 571224: How do I write an equation in slope intercept form for the line that passes through (5,6) and is parallel to the line described by 4x - 5y = 20
Click here to see answer by nerdybill(7384) About Me 

Question 571354: Find the x-intercept and y -intercept of the line given by the equation.
5x+9y=7

Click here to see answer by solver91311(24713) About Me 

Question 571277: You are selling red candy for $2 and blue candy for $1. Each person is asked to sell $10 worth of candy.
1. Write and equation that says the total amount from red candy, x and blue candy, y is EXACTLY equal to $10.... IS THIS RIGHT 2x+1y=10??
2. Rewrite the equation above in slope-intercept form? IS THIS RIGHT y=10-2x???
3. What are 6 combinations of red candy and blue candy that you must sell to meet or exceed the $10 requirement..... IS THIS RIGHT 5,1 5,2 5,3 5,4 5,5 5,6????

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 571804: I started off the problem with -3(z-6)>2z-2
I simplified that down to -3z+18>2z-2
I'm not sure what to do from here?

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

Question 571691: A linear function has a slope of 7, and when x is 3 the value for y is 22. Use a graph or a table to figure out the equation of the function. Show your work.
Click here to see answer by richard1234(7193) About Me 

Question 571885: Hello. Please help me with this asap.
Find the slope, if it exist.
y= -4x+8

m=

Click here to see answer by Tokubo123(1) About Me 
Question 571885: Hello. Please help me with this asap.
Find the slope, if it exist.
y= -4x+8

m=

Click here to see answer by Maths68(1474) About Me 

Question 571901: how do i get the points to graph y=2x(squared)+11x+5?
Click here to see answer by stanbon(75887) About Me 

Question 571906: 3x-6=0 what is the x and y intercept and one other point
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Question 571922: Dorothy invested her income tax refund in two separate accounts. She invested part of it at 7% and triple that amount at 11%. The total first-year interest from the two investments was $120. How much did she invest at 7%?



a. $300 at 7%
b. $150 at 7%
c. $200 at 7%
d. $250 at 7%

Click here to see answer by Earlsdon(6294) About Me 
Question 571922: Dorothy invested her income tax refund in two separate accounts. She invested part of it at 7% and triple that amount at 11%. The total first-year interest from the two investments was $120. How much did she invest at 7%?



a. $300 at 7%
b. $150 at 7%
c. $200 at 7%
d. $250 at 7%

Click here to see answer by mananth(16946) About Me 

Question 571920: a chemist wants to mix a 60% saline solution with 20 liters of a 45% saline solution to obtain a 55% saline solution. how much of the 60% saline solution should she use?
Click here to see answer by Earlsdon(6294) About Me 

Question 571965: ). Use the coordinates (1997, 1.26) and (2006, 2.31) to find the slope, or rate of change, between the two points. Describe how you arrived at your answer.

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

Question 571933: find the equation of the line that is parallel to 5x+2y=-1 and contains the point (-4,-2)
Click here to see answer by lwsshak3(11628) About Me 

Question 572044: What is the slope of the line 2x + 2y = -7?
Click here to see answer by nyc_function(2741) About Me 

Question 572143: y=7-5(x+4)
Solve in intercept form(show your work algebraically)

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

Question 572145: Write the equation of a line containing pts (5,-7) and is A) parralel to the x axis

B)parallel to y axis
Thanks!

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

Question 572373: how do y0u find the perimeter of an equilateral triangle if only one side is given .7m
Click here to see answer by Alan3354(69443) About Me 

Question 572497: please help me with :
horizontal through (7,0)
vertical through (11,-4)

Click here to see answer by KMST(5328) About Me 

Question 572546: how to find the y-intercept, slope and direction of the line of No. 1.) y=2x No. 2.) y=-2x+2 No. 3) y=1/2x-3 No. 4.)x-3y=5 And the last one No. 5.) 2x+4y=6 PLEASE ANSWER MY QUESTION. THANK YOU VERY MUCH. IT WILL BE VERY MUCH HELPFUL IF YOU ANSWER IT BECAUSE I CAN'T UNDERSTAND IT.
Click here to see answer by mananth(16946) About Me 

Question 572513: I need help with the following problem:
Solve by the subsitution method.
9x + 2y = -37
-3x + y = 19

Click here to see answer by mananth(16946) About Me 

Question 572634: find the slope of the line 2y=x+7
Click here to see answer by Maths68(1474) About Me 

Question 572633: how do you slove 27p+8=-p+9? and what is p?
Click here to see answer by Maths68(1474) About Me 

Question 572696: I need help on this question please.
Find the equation of a line satisfying the given conditions:parallel to the x-axis and passes through the point (-5,-3)

Click here to see answer by nerdybill(7384) About Me 

Question 572786: (-3,10) (-2,5)(-1,2)(0,1)(1,2)(2,5)(3,10) --what is the equation to show its relation?
example- y=(?)x
example- y=(?)x-(?)

Click here to see answer by KMST(5328) About Me 

Question 572907: write an equation of a line perpendicular to y-4x-8 that goes through the point(0,6)
Click here to see answer by josmiceli(19441) About Me 

Question 572898: Write the equation of the line that passes through the given point and is perpendicular to the given line. Write the answer in slope-intercept form.
P(-9, 7), y + 8x = -19

Click here to see answer by mananth(16946) About Me 

Question 572423: Find a point-slope equation for the line tangent to the circle at (4,9), whose center is (2,0)
Click here to see answer by richard1234(7193) About Me 

Question 572982: I need step by step instructions on how to solve the following:
Solve by the elimination method.
9x - y = 40
x + 8y = 45

Click here to see answer by mananth(16946) About Me 

Question 573111: how to solve for a if the line through the two given points has the given slope
(a,3)(2,6)M=-1

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

Question 573143: Need help on these question please.
Find the slope of a line parallel to the line passing through the points (-4,0) and (1,-5)
Find the slope of a line perpendicular to the line passing through the points (-1,4) and (8,1)

Click here to see answer by solver91311(24713) About Me 

Question 573481: determine how many solutions exist use either elimination or substitution to find the solutions if any y=2x+3 and y= -x-4
Click here to see answer by mananth(16946) About Me 

Question 573513: Which of the points A(5,3) or B(1,5) is closer to the point R(1,1)?
Click here to see answer by josmiceli(19441) 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, 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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