Question

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

Answer 1

Answer:

{-18, -6}

Step-by-step explanation:

Here there are only two inputs:  {-2, 2}.  There are only two outputs:  {f(-2), f(2)}, which, in turn, can be written as {3(-2) - 12, 3(2) - 12}, or {-18, -6}.  This corresponds to Answer B.