How do i solve this by using substitution? y=4x-9y=x-3

Question

asked Feb 16, 2017 37.3k views

1 Answer

Lazyhammer · Answer 1 · 2017-02-21T19:56:11+0000

y = 4x -9
y = x-3
Replace the "y" in above equation by x-3
x - 3 = 4x - 9
-3x = -6
x = 2
Then replace x = 2 to the beneth
y = 2 - 3 = -1