Question

What is the range of the function f(x) = 3x − 12 for the domain {-2, 2}?
A. {3, 12}
B. {-6, -18}
C. {-18, -6}
D. {6, 18}
E. {12, 3}

Answer 1

domain is all x values so replace x by -2 and then 2

Answer 2

Put x = -2 and x = 2
that will give the range

Answer 3

first replace x by -2
and then solve