Question

Solve each system by substitution.
5) y = 4x - 9
y=x-3

Answer 1

1) y=4x-9
2)y=x-3

Make 1 and 2 equal each other:

4x-9 = y = x-3
4x-9 = x-3

Put x’s and the other numbers on each side

3x = 6

Divide by the amount of x’s

Therefore:

X= 2

Hope this helped :)

Answer 2

Point form (2,-1)

Equation x=2, y=-1