Question

Does someone know how to do this? I’m very confused

Answer 1

Answer: -8, -6 , -4, -2, 0

Explanation:

r = -2, f(r) = 2(-2) - 4 = -4 -4 = -8

r = -1, f(r) = 2(-1) - 4 = -2 -4 = -6

r = 0, f(r) = 2(0) - 4 = 0 -4 = -4

r = 1, f(r) = 2(1) - 4 = 2 - 4 = -2

r = 2, f(r) = 2(2) - 4 = 4 -4 = 0