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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 479796: solve the system of linear eqations by sybstitution. x+2y=6 and 2x+3y=8
i do have the results which are -2,4. But how do i find out type of system, and type of lines,
Click here to see answer by ewatrrr(10682)

Question 479930: find the system of these equations -2x=2+1y and -6x-y=-2
Click here to see answer by stanbon(57203)

Question 480279: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
8x + 11y = -50
-32x – 44y = -200
Click here to see answer by stanbon(57203)

Question 480298: Solve this problem:
-4x-3y=-8 Find the x and y intercepts. I also need to show all of my work in solving the equation.
Click here to see answer by solver91311(16868)

Question 480312: hello i need help in finding the equation of the line that passes through the point (-2,3) and has a slope of 5 ? tnx you very much
Click here to see answer by stanbon(57203)

Question 480310: hello i would please like to know the steps for finding the equation of the line with y-intercept of four and a slope of 3/2 thank you very much
Click here to see answer by stanbon(57203)

Question 480314: hellos i would like to know if you can explain the steps of graphing the line y=3-1/2(x-2)

and also graphing the inequality y less than -2+1/4x
tnx you very much
Click here to see answer by stanbon(57203)

Question 480506: Write the system of linear equations that corresponds to this augmented matrix

Click here to see answer by Edwin McCravy(8878)

Question 480507: A restaurant manager wants to purchase 200 sets of dishes. One design costs $25 per set, while the other costs $45 per set. If the manager has $7,400 to spend, how many of each design should be ordered?

Click here to see answer by mathstutor494(95)

Question 480556: Find the two numbers whose sum is 29 and whose difference is 15. Please show all work.
Click here to see answer by emargo19(101)

Question 480558: The sum of two numbers is 24 and their difference is 2. What are the numbers? Please show all work.
Click here to see answer by Maths68(1474)

Question 480759: 49x^2-14x-3
I have to factor. I got the common is 7 but it is not turning out right for me. please help.
Click here to see answer by algebrahouse.com(1079)

Question 480775: x^2+16x=0

I have to complete the square. I thought I needed to take way the x^2 and put on the other side and then I am left with 16x instead of 16. I could square 16 which is 4. But I don't know what to do with the other x?
Click here to see answer by stanbon(57203)

Question 481057: Solve the following system algebraically
2x^2 - y^2 = 14, x-y = 1
Click here to see answer by MathLover1(6611)

Question 481201: 135x^2-222x+91

I have to factor this problem.
Click here to see answer by jim_thompson5910(28476)

Question 481255: I do not remember how to help my 7th grade daughter with this type of problem and any help would be greatly appreciated!
The table shows the results of two consecutive Biology test for James, Mazen, Mia, and Shameeka. What is teh test differential for each student?
Student Test 1 Test 2
James 84 96
Mazen 98 89
Mia 70 86
Shameeka 100 98
Thank you in advance for any help that you can provide for us!
Click here to see answer by Alan3354(30924)

Question 481338: Four family members Tom, Melanie, Bob and Irene have a collective age of 150 years. Melanie is one third Tom’s age and Bob’s age is twice Melanie’s. Irene’s age is as much as Tom’s and Melanie’s put together. What is each person age? Solve by any convenient algebraic method. How would you check your solution?
I've got the answer: tom=45, melanie=15, bob=30, irene=60 but i could not show the steps or solution. will you do it for me?
Click here to see answer by lwsshak3(6455)

Question 481597: How you derived the following?
x+x/3+2x/3+x+x/3=150
(10x)/3 = 150
My exact question here is how do you get the 10x? thanks

Click here to see answer by jim_thompson5910(28476)

Question 481739: Can you show me on how to solve these linear equations?
8–2(1–4a)=6a

Click here to see answer by jim_thompson5910(28476)

Question 481891: 2x-y=12,and x =2y then x=
Click here to see answer by ewatrrr(10682)

Question 481988: I am very confused with Algebra as a whole If someone can please help me using the substitution method with each step I would greatly appreciate it. 6x-2y=12 2x+2y=8
Click here to see answer by jim_thompson5910(28476)

Question 482022: How can you Evaluate the following?
y = (2a2b)2 * 3c + d/2 where a = 2, b = 3, c = 4 and d = 24

Click here to see answer by rfer(12644)

Question 482240: please help me solve this equation 4y+6y=3y-36
Click here to see answer by MathLover1(6611)

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(15622)

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(8878)

Question 482501: can you explain how to do this problem x+26=2x+1(x+4)
Click here to see answer by stanbon(57203)

Question 482505: x/4-y/11=-9/44
x/6-y/13=-1/26
Click here to see answer by stanbon(57203)

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(30924)

Question 482924: x=y+4
2x+3y=43
Click here to see answer by jorel1380(2518)

Question 482944: 4x+2y=20
y=x-2
Click here to see answer by jorel1380(2518)

Question 482946: x-y=3
2x+2y=2
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Question 482949: x+2y=2
2x+3y=-1
Click here to see answer by jorel1380(2518)

Question 482950: 2x+y=8
x-y=10
Click here to see answer by jorel1380(2518)

Question 483066: can you substitute 2x - 8y - 6=0
Click here to see answer by Alan3354(30924)

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(809)

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(28476)

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(7569)

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(30924)

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(30924)

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(6611)

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(30924)

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(6948)

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