Question

Please use substitution to solve this system of equations.
2x-3y=-1
y=x-1

A. (-5,1)

B.(4,3)

C.(-2,-3)

D.(5,-3)

Answer 1

Can't you do this?

Answer 2

No... I always get decimals..

Answer 3

show me your steps.

Answer 4

alright. Let me type them

Answer 5

2x-3y=-1
y=x-1
2(-5) - 3(1) = -1
-13
2(4) - 3(3) = -1
-1
2(-2)-3(-3)=-1
5
2(5)-3(-3) =-1
19
(whew. i used a calc so i wouldn't mess up. idk how to do it..)

Answer 6

No this problem you can solve it,so you don't need to waste your time substituting in it.
- * - = +
- * + = -