Question

Help, step by step

a.
A function is given by y = 7x-8
Determine y(-2)
b.
A power function is given as y = 4 · x ^ 2
Determine y(2)

Answer 1

A ) y(x) = 7x -8

y(-2) = 7*(-2) - 8

= -14 -8 = -22

B ) y(x) = 4x²

y(2) = 4 *(2)²

= 4 * 4 = 16