Question

If the domain is {-4, 0, 5}, find the range.

Answer 1

what is the function?

Answer 2

Given the function f(x) = 4 - 2x

Answer 3

f(-4)=4-2(-4)=4+8=12
now calculate f(0) and f(5)

Answer 4

f(0)=4-2(0)=4 and f(5)=4-2(5)=4-10=-6
so the range is {f(-4), f(0),f(5)}={12,4,-6}