Questions on Algebra: Systems of Linear Equations answered by real tutors!

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Question 535037: Solve the system algebraically.
2x + y - 10 = 0
x - y - 5 = 0
What is the value of y?

Click here to see answer by mananth(16946)

Question 535059: Which of the following equations is equivalent to 2/3x - 1/2y = 6?
2x - y = 6
2x - y = 36
4x - 3y = 36

Click here to see answer by mananth(16946)

Question 535058: Which of the following equations is equivalent to x - y = 6?
2x - y = 6
2x - y = 36
4x - 3y = 36

Click here to see answer by mananth(16946)

Question 535309: y=2x=5
y=4x-9
solve using substitution and list the coordinates.
Click here to see answer by Alan3354(69443)

Question 535311: y=2x+5
y=4x-9
solve using substitution and list the coordinates.
Click here to see answer by stanbon(75887)

Question 535685: Write an equation of the line that is parallel to the given line y = x + 3 and the given point (5,0). PLEASE answer this question! Thanks so much :)

Click here to see answer by KMST(5328)

Question 535652: I honestly have no idea what toopic this question would fall under... Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y). x + 2y = 7 and 2x + y = 8 I can't figure out how to do it. I've tried to many times, but I can't figure it out. Can you please help me?
Click here to see answer by ankor@dixie-net.com(22740)

Question 535906: 3r+6>9
Click here to see answer by edjones(8007)

Question 535999: 2(y-5)=14
Click here to see answer by Math_prodigy(24)

Question 536001: 5(2x-5)=5
Click here to see answer by Math_prodigy(24)

Question 535998: I don't understand this problem
y=x^2
Click here to see answer by fcabanski(1391)

Question 536002: solve 3x/5-2/6 =20
Click here to see answer by bucky(2189)

Question 536102: find an equation of the line having given the slope and containing the given point m=3/4(9,-8)
Click here to see answer by Alan3354(69443)

Question 536224: 10 + 0.25x = 20
Click here to see answer by oberobic(2304)

Question 536226: 10+ 0.25x = 20
10 + 0.25x <=20
Click here to see answer by oberobic(2304)

Question 536435: solve by the substitution method 3x-9y=69 5x+25=y. the solution
Click here to see answer by Maths68(1474)

Question 536436: solve by the substitution method 7m+n=10 m-6n=26 the solution is.
-7x+3y=4 -2x+y=10 the solution
9x+8y=29 -7x+y=28 the solution
I really need some help. I dont understand how to do this

Click here to see answer by Alan3354(69443)

Question 536509: Without graphing, determine whether the following pairs of lines are (a)parallel, (b) perpendicular, or (c) neither parallel nor perpendicular.
5x-6y=19
6x+5y=-30

Click here to see answer by Earlsdon(6294)

Question 536511: Find the solution to each system by the addition (elimination) method. Check your answers.

4s-5t=18
6s+10t=-8

Click here to see answer by Maths68(1474)

Question 536518: given the function defined by g(x)=2x-5
g(-3)
Click here to see answer by Maths68(1474)

Question 536510: Find the solution to each system by the substitution method. Check your answers.
2x-5y=-1
x-3y=-3

Click here to see answer by Maths68(1474)

Question 536508: Given the function defined by g(x)=2x-5, find the following.
g(-3)

Click here to see answer by jim_thompson5910(35256)

Question 536595: Here is another way to determine the number of solutions for a system of equations, using ratios. Please show how to apply it on the system at the bottom:
The system of equations a1x + b1y + c1 = 0, a2x + b2y + c2= 0 has:
A unique solution if a1/a2 ≠ b1/b2
No solution if a1/a2 = b1/b2 ≠ c1/c2
An infinite number of solutions if a1/a2 = b1/b2 = c1/c2
This is a very helpful test to quickly determine the nature of your system. Please demonstrate how you would apply it on this system:

y - 3 = x
2y - 2x = 6

Please help, I am not even sure I understand what my teacher is asking of me!
Click here to see answer by bucky(2189)

Question 536743: solve by the substitution method.
8x + 5y = 14
x = 46 - 8y
Click here to see answer by Maths68(1474)

Question 537186: Hello, I am trying to figure out how to solve a system by the method of substitution. I have two problems in which I am having trouble with.
1) {x+3y=8
{y= 2x-9
and
2) {5x+2y=0
{x-3y=0
I'm confused on how to begin and the proper way to solve the problem, thank you for your help.
Click here to see answer by KMST(5328)

Question 537507: Is y = (-1/3)x - 5 y = 3x - 13 parallel, perpendicular or neither?
Click here to see answer by mananth(16946)

Question 537488: what is the x and the y-intercepts of 3x-y=6
Click here to see answer by fcabanski(1391)

Question 537702: i need to solve the system y=4x+12 and y=-2x+6
Click here to see answer by stanbon(75887)

Question 537900: Can you tell me how to represent A linear function ?
Click here to see answer by fcabanski(1391)

Question 538000: How do i find the value of x?
Click here to see answer by Alan3354(69443)

Question 538697: I Am really struggling on solving linear equations with substitution and elimination. could you help me out and tell me the most easiest way to do these
Click here to see answer by JLB(8)

Question 538708: Can you please help me discern how to graph a solution for the two lines: 1/2x-y=3 and x=6+2y
Click here to see answer by KMST(5328)

Question 538947: The measure of one acute angle in a right triangle is four times the measure of other acute angle. Write and solve a system of equations to find the measures of the acute angles.
Click here to see answer by fcabanski(1391)

Question 538963: Hi please help me solve this equation:Solving Linear Systems-Solve the linear system using the substitution method.
x=17-4y
y=x-2
Click here to see answer by boilpoil(127)

Question 538970: Please help me on this problem: Solve the linear system using the substitution method.
x=16-4y
3x+4y=8
Click here to see answer by boilpoil(127)

Question 538982: Please help me on this problem:
Solve the linear system using the substitution method.
-4x+3y=-5
x=4-2y
thank you
Click here to see answer by boilpoil(127)

Question 539093: At 10:00 am, a car leaves a home at a rate of 60 mi/h. At the same time, another care leaves the same home at a rate of 50 mi/h in the opposite direction. At what time will the cars be 330 miles apart?
Click here to see answer by ankor@dixie-net.com(22740)

Question 539622: Can you put these into y=mx+b
x-y=0
5x-3y=10
and x-2y=1
5x-4y= -23
and 4x+3y=8
x-2y=13
and 2x+3y= -12
8x-5y=40
please and thank you
Click here to see answer by Alan3354(69443)

Question 539622: Can you put these into y=mx+b
x-y=0
5x-3y=10
and x-2y=1
5x-4y= -23
and 4x+3y=8
x-2y=13
and 2x+3y= -12
8x-5y=40
please and thank you
Click here to see answer by stanbon(75887)

Question 539658: 12+36divide 4 {3-6}-1to the 8 power
Click here to see answer by stanbon(75887)

Question 540300: what is the answer to y=x+2 & y=2x+7 this is systems of linear equations?
Click here to see answer by stanbon(75887)

Question 540367: I need help using the elimination method to solve the following:
2x+8y=12
-8x-8y=-16
Click here to see answer by stanbon(75887)

Question 540577: what is m plus 3 less than 2 i need the help i know what steps to do but dont know what category to use for the answer do u flip the sign

Click here to see answer by Alan3354(69443)

Question 540795: solve by the substitution method 3x+7y=39 and -8+y=73
Click here to see answer by fcabanski(1391)

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