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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 482240: please help me solve this equation 4y+6y=3y-36
Click here to see answer by MathLover1(20850)

Question 482052: For what values of k will the line kx � 3y = 4k have a slope of 1?
i have started by making it a linear equation and i got Y=(1/3)x-k. now am stuck can you please get me started or at list tell me if am in the wroung directios. is just that i dont know what to do next. helpppppp
Click here to see answer by ankor@dixie-net.com(22740)

Question 482461: can somebody help me solve this problem and show me the work so i understand how to do it
5-2(x+6)=1
Click here to see answer by Edwin McCravy(20056)

Question 482501: can you explain how to do this problem x+26=2x+1(x+4)
Click here to see answer by stanbon(75887)

Question 482505: x/4-y/11=-9/44
x/6-y/13=-1/26
Click here to see answer by stanbon(75887)

Question 482637: -6x=-5y+8
2x+6y=28
Click here to see answer by cleomenius(959)

Question 482664: Please help solve. Thanks!

Solve the linear system:
-2x+y=5
4x-2y=9

Click here to see answer by nochka22(2)

Question 482664: Please help solve. Thanks!

Solve the linear system:
-2x+y=5
4x-2y=9

Click here to see answer by Alan3354(69443)

Question 482924: x=y+4
2x+3y=43
Click here to see answer by jorel1380(3719)

Question 482944: 4x+2y=20
y=x-2
Click here to see answer by jorel1380(3719)

Question 482946: x-y=3
2x+2y=2
Click here to see answer by jorel1380(3719)

Question 482949: x+2y=2
2x+3y=-1
Click here to see answer by jorel1380(3719)

Question 482950: 2x+y=8
x-y=10
Click here to see answer by jorel1380(3719)

Question 483066: can you substitute 2x - 8y - 6=0
Click here to see answer by Alan3354(69443)

Question 483274: can someone please help me solve the following equations for x
1) 6/x+3=9x/x^2-9
2) sqrt2x+3=5
3) x^3-2x^2-x=2 given x=1 is one solution.
Thank you

Click here to see answer by Gogonati(855)

Question 483505: I have been working a problem over and over for my online algebra class and I have also used the "help me with this problem" link and the "veiw an example" link and for some reason when I work the problem I am not getting the right answer.
The problem says" Write an equation that is paralell to the given equation and point".(MyMathLab, wk6, problem 32).
given equation: 4x=3y+5 given point (-3,4).
I know that I need to get my given equation to y=mx+b so that I can find what my slope is and use that same slope in my new equation.
4x=3y+5
-4x -3y
-3y=-4x+5
/-3 /-3 this is divide by -3 from both sides
y=4/3x-5/3
So my slope is 4/3 now I can substitute in my points for x and y to find b.
4=4/3(-3)+b
4=-12/3+b
4=-4+b
-4 -4
0=b
So my new problem would be y=4/3x+0. But when I input that answer into my solution it says that I am wrong. I am not sure what I am doing wrong. Please help I have four problems like this and cannot figure out what I am doing wrong.
Click here to see answer by jim_thompson5910(35256)

Question 483511: If possible solve each system of equations. Use any method. If there is not a unique solution to a system state a reason. 3x-11y=9 -9x+33y
Click here to see answer by edjones(8007)

Question 483891: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
4x + 3y = -45.5
-5x + 8y = -43
Click here to see answer by Alan3354(69443)

Question 483892: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
9x + 6y = 60
-27x � 18y = -180
Click here to see answer by Alan3354(69443)

Question 484002: Solve the system by the elimination method.
24x+12y=-11
16x-19=18y
I just cant get it. please help.

Click here to see answer by MathLover1(20850)

Question 484008: I was asked to solve for y.... x+4y=4.
the answer I was given is y= (x/4)-1. How did they get this? Step by step please... I'm new to this! Thank you!
Click here to see answer by Alan3354(69443)

Question 484088: 7x+6y=-30
-8x+y=50
What is the solution of the system, using substitution method. I need an ordered pair for the answer, and I keep obtaining the wrong answer, somehow i got 2, 6 and that was not correct. Help me please! :)
Click here to see answer by nerdybill(7384)

Question 484110: 9x + 7y= -12
-9x + y = 60

I need to know the ordered pair solution. I keep obtaining inaccurate answers.
Please help!
Click here to see answer by Alan3354(69443)

Question 484920: -10x+4y=-30
5x-2y=15
Click here to see answer by jim_thompson5910(35256)

Question 484922: 2x+4y=-10
-3x-2y=-1
Click here to see answer by jim_thompson5910(35256)

Question 484926: x+2y-2z=1
7x-4y+z=11
2x-3y+2z=5
Click here to see answer by jim_thompson5910(35256)

Question 484927: 4x+2y=6
x-2y=4
Click here to see answer by jim_thompson5910(35256)

Question 485303: 4x+3y=1, 2x+5y=11 solve by elimination by subtraction
Click here to see answer by mananth(16946)

Question 485507: given the linear equation y=-4/3+1 , find the y -coordinates of the points (-6,),(-3), and (6,)
Click here to see answer by John10(297)

Question 485795: Determine if (1/2,-4) is a solution to 4x-3y=-10.
Click here to see answer by rfer(16322)

Question 485903: Bruce purchased a new computer at a 10% discount sale for $1215.00. What was the original price of the computer?
Click here to see answer by Tatiana_Stebko(1539)

Question 486163: x + 6 = 2x + 5
Click here to see answer by rfer(16322)

Question 485723: Hello my name is kevin and im an exhange student from spain can you please explain to me the process of how to solve these by graphing?
{2x+9=y
{y=-4x-3
Click here to see answer by Edwin McCravy(20056)

Question 486353: what is the slope intercept form of 7x-3y=34?
Click here to see answer by Tatiana_Stebko(1539)

Question 486572: I am trying to check my work - help
2x + 4y =50, 3x + 5 y=66
2x + 4y = 50
2x = 50 - 4y
x = 25 -2y
3(25 - 2y) + 5y = 66
75 -6y +5y =66
-y = 66 - 75 = -9, y=9
2x + 36 = 50
2x = 50 - 36 =14
x=7
Click here to see answer by deborabr(181)

Question 486957: Determine whether the system is consistent, inconsistent, or dependent
3x+ 2y = 15
6x+ 4y = 30
Click here to see answer by John10(297)

Question 487165: the question is find the solution to each system by the substitution method
2x - 5y = -1
x - 3y = -3
Click here to see answer by jorel1380(3719)

Question 487386: can someone plss help me im very stuck ?
decide whether the given ordered pair is a solution of the given system.
1. (3,-7)
5x + y = 8
2x - 3y = 28

Click here to see answer by Edwin McCravy(20056)

Question 488369: can someone please help me?
solve each system by the substitution method.
8. 2x+y-x=-3y+5
y+2=x-5

Click here to see answer by rfer(16322)

Question 489340: 2x+1=-17 the answer is -9 but i want to know which is the differences between this other equation 8x+7=-3 and the answer is 2 can you explain this to me please
Click here to see answer by rfer(16322)

Question 489547: I need help solving this equation using the substitution method. Can you please answer it as detailed as possible.
2x - 3y = 0
-4x + 3y = -1
Click here to see answer by mananth(16946)

Question 489762: According to data from a Texas agricultural report, the amounts of nitrogen (lb/acre), phosphate (lb/acre) and labor (hr/acre) needed to grow honeydews, yellow onions, and lettuce are given by the following table:

YELLOW
HONEYDEW ONIONS LETTUCE

NITROGEN 120 150 180

PHOSPHATE 180 80 80

LABOR 4.97 4.45 4.65

If a farmer has 220 acres, 29,100 pounds of nitrogen, 32,600 pounds of phosphate, and 1061 hours of labor available, can he use all of his resources completely? If so, how many acres should he allot for each crop?

We set up the initial equations:

120H + 150Y + 180L = 29,100

180H + 80Y + 80L = 32,600

4.97H + 4.45Y + 4.65L = 1061 OR 497H + 445Y + 465L = 106,100 (easier than decimals)

The instructor is working with systems of linear equations and matrices. We do not have a graphing calculator.
Thank you for your help!

Click here to see answer by chessace(471)

Question 489871: 4x=4

Click here to see answer by deborabr(181)

Question 490128: hi i want to know if you can please give me the step by step answear to this equation ive tried so many ways and i keep getting different answears [(-4+8)-(-2-3)^2]+[(-11+8-6)^2]
Click here to see answer by stanbon(75887)

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