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}

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}

gandalf123 · Answer

@mathmale

mathmale · Answer

You are told that the smallest x-value is -2 and that the largest is x=2.

Substitute both x-values into the given linear function f(x) = 3x − 12.  Determine the largest and smallest f(x) value.      Write the range in the format [smallest, largest].

mathmale · Answer

Still alive?  If you're still interested in solving this problem, please respond; otherwise I'll close this post.

gandalf123 · Answer

I already answered the question

gandalf123 · Answer

thanks