Question

Y = x + 2 and y = x^2 - 4

Substitute mx+b for y

solve for x

substitute the first x-value into the linear equation and solve for y

Answer 1

`x^2-4=x+2\\\\\implies x^2 -x-6=0\\\\\implies (x-3)(x+2)=0\\\\\implies x=3, x=-2`

when x = 3, y = 5

when x = -2, y = 0