Question

–4x + 3y = –12
–2x + 3y = –18
what is the solution of the system

Answer 1

if someone can just help me set it up

Answer 2

If we multiply the second equation by 2 we can subtract the 2 equations and the "x" terms should cancel. That would help you find the "y" term. From there sub the "y" term into any of the 2 equations (Originals) and find your "x" term. Once you get an answer post it here and I can verify it.

Answer 3

well i know that but im not sure how to go about to set it up the right way to fiure out x and y

Answer 4

Alright so here: On a piece of paper write down both equations one underneath the other like you did here. Then inspect the two equations.

Answer 5

Try and find a term (x or y) that you can cancel by subtracting or adding the two equations. Remember you can always multiply or divide an equation on both sides if you need to. In this case I see that the two "y" terms are identicle. If you were to subtract both equations from each other you can see that the "y" terms would cancel out. You would be left with -2x = 6. That gives you x = -3. Now if you sub in x = -3 into any of those equation you would get your "y" value. Which should be -8.

Answer 6

y=-8
x=-3

Answer 7

Yes that's right