Question

What is the result of substituting for y in the bottom equation?
y= x-7
y = x2 + 2x - 4

Answer 1

x^2+x+3

Explanation:

y=x-7

x-7=x^2+2x-4

x^2+2x-4-x+7

x^2+x+3

Answer 2

Answer: x-7=x^2+2x-4

A P E X

Explanation:

but also, if you are wondering how I got to that answer, you substitute y in for the y equation. Since y=x-7 you’ll take that why and put in in the y in (y)=x^2+2x-4.