Question

What is the answer? Don’t need an explication

Answer 1

C

Explanation:

y = 2x

y = x²- 8

2x = x²- 8

x²- 2x - 8=0 solve for x by factoring

(x-4)(x+2) = 0

x = 4, -2

y= f(4) = 2(4) = 8

y= f(-2) = 2(-2) = -4

The solution (x,y) pairs are: (-2, -4) and (4, 8) Choice C