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

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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(1936)

Question 537507: Is y = (-1/3)x - 5 y = 3x - 13 parallel, perpendicular or neither?
Click here to see answer by mananth(12270)

Question 537488: what is the x and the y-intercepts of 3x-y=6
Click here to see answer by fcabanski(889)

Question 537702: i need to solve the system y=4x+12 and y=-2x+6
Click here to see answer by stanbon(57967)

Question 537900: Can you tell me how to represent A linear function ?
Click here to see answer by fcabanski(889)

Question 538000: How do i find the value of x?
Click here to see answer by Alan3354(31529)

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(1936)

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(889)

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(15746)

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(31529)

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(57967)

Question 539658: 12+36divide 4 {3-6}-1to the 8 power
Click here to see answer by stanbon(57967)

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(57967)

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(57967)

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(31529)

Question 540795: solve by the substitution method 3x+7y=39 and -8+y=73
Click here to see answer by fcabanski(889)

Question 541024: A barge takes 3 hours to go(at a constant rate) downstream 27 miles with a current of 3 miles per hour. If the barge's engines are set up at the same pace, find the time of the return trip against the current.
I am completely lost, and do not even know how to set up the problem.
Click here to see answer by scott8148(6628)

Question 541047: fined the values of x and y if: (enter the value of x for the first blank and the value of y for the second blank)
x+y=-4
4x-y=-6
Click here to see answer by oberobic(2304)

Question 541302: The number of ladies is 80 greater than the number of men. If there are 1310 people all together, how many gentleman are there?
Click here to see answer by Maths68(1474)

Question 541493: how do i get y by itself in the following equations?
x+2y=4
2x+y=0
Please explain step by step thankyou
Click here to see answer by friesr(113)

Question 541567: Can you put these into y=mx+b
5x+y=-4 and x-y=2
-0.45-y=1.35 and -1.8+y=-1.8
-0.4x=0.8y=-16 and 1.2x+0.4y=1
Click here to see answer by stanbon(57967)

Question 541812: What method did you use to solve this, so I can solve the next one.
2y = x + 1
–2x – y = 7

Click here to see answer by mananth(12270)

Question 542138: An interval has a notation of (6,8) find the midpoint
Click here to see answer by jim_thompson5910(28715)

Question 542490: Substitution
x+3y=7
3x=9-5y
Click here to see answer by friesr(113)

Question 542728: 3x=5y how do i do this and get the answer right??
Click here to see answer by Alan3354(31529)

Question 543015: Several students decide to start a T-shirt company. After initial expenses of $280, they purchase each T-shirt wholesale for $3.99. They sell each T-shirt for $10.99. How many must they sell to break even.
Click here to see answer by josmiceli(9817)

Question 543006: I've been trying to figure out the answer on the 3 variables equations but i can't find the solution. Supposibly the solution are whole numbers. Can you help me get the answer :
3a - 2b + 7c = 13
a + 8b - 6c = -47
7a - 9b -9c = -3
Click here to see answer by scott8148(6628)

Question 543094: how do u solve (3,1);{x+3y=6 {4x-5y=7

Click here to see answer by jpg7n16(66)

Question 542301: 2x + y = 5
x - y = 1
Click here to see answer by jpg7n16(66)

Question 539439: How Do You Solve This Problem In Substitution Method?
x + y = 4
Y=2x+1

Click here to see answer by jpg7n16(66)

Question 538430: I need to be shown the steps to solve a problem like {3x+2y=2 -2+2y=16}
Click here to see answer by jpg7n16(66)

Question 542189: use substitution method to solve linear system
x-2y=-25
3x-y=0
Click here to see answer by jpg7n16(66)

Question 538167: I need help working this problem out. I have no idea what I am doing.
4a + 2b - 6c = 2
6a + 3b - 9c = 3
8a + 4b - 12c = 6
Click here to see answer by jpg7n16(66)

Question 538670: My mom and I can't figure out how to solve this word problem.
Producing a musical costs $88,000 plus $5900 per performance. One sold-out performance earns $7500 in revenue. If every performance sells out, how many performances are needed to break even?
Here is what we tried:
y=7500x + 5900 y=88000
88000= 7500x + 5900
82100=7500x
10.94 shows
also tried:
x= 7500 x= 88000+5900
x=93900/7500
12.52 shows
I know I am doing something wrong. I'm really confused!
Click here to see answer by jpg7n16(66)

Question 543714: Rewrite each equation in intercept form. Show your steps.
Equation: y= 5+3(x-4)
- How do I do this, and what's the answer?
Click here to see answer by stanbon(57967)

Question 543714: Rewrite each equation in intercept form. Show your steps.
Equation: y= 5+3(x-4)
- How do I do this, and what's the answer?
Click here to see answer by rfer(12730)

Question 543980: I have to do this with the substitution method: Help me please
3x = 4y
x = (2y+1)/3

I know the answer is x=2/3 and y = 1/2 but I don't know the method
Thank you
Click here to see answer by umnikmo(75)

Question 543968: I'm extremely confused on how to solve a couple of these problems,
ex:2x-7y=3
5x-4y=-6
using the elimination method, could you explain a simple way of how to solve? I'm just extremely lost and any help would be greatly appreciated.
thank you, Lexy.
Click here to see answer by ankor@dixie-net.com(15746)

Question 544364: need help graphing y=5x-2
Click here to see answer by jim_thompson5910(28715)

Question 544461: okay so it says solve linear system using substitution
4x + 3y = -5
x = y - 3
Click here to see answer by stanbon(57967)

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