Cracking The SAT Premium

Functions and Graphs Drill 1: No Calculator Section

Use your new knowledge of functions and graphs to complete these questions, but don’t use your
calculator! Answers and explanations can be found on this page.

3 .Let  the function    f   be  defined such    that    f(x)    =   x^2     −   c,  where   c   is  a   constant.   If  f(−2)   =   6,

what    is  the value   of  c   ?

A) −10

B) −2

C) 0

D) 2

7.

The graph   above   shows   y   =   2x. Which   of  the following   graphs  represents  y   =   |2x|    ?

A)

B)

C)