Question

F(x)=x+7
if you know the domain is {-9,-3} then the range must be?

Answer 1

Domain is the set of x-values and range is the set of images f(x).

x F(x) = x + 7

-9 -9 + 7 = -2

-8 -8 + 7 = -1

-7 -7 + 7 = 0

-6 -6 + 7 = 1

-5 -5 + 7 = 2

-4 -4 + 7 = 3

-3 -3 + 7 = 4

So the range is {-2,4} <------ answer