Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
The function
, defined for
, is graphed above. For how many different values of x is 
?
(A) None
(B) One
(C) Two
(D) Three
(E) Four
The correct answer is E
Explanation
when the point (x ,0.2) is on the graph of f. Drawing the line y = 0.2, as in the graph below, shows that the y -value is equal to 0.2 for four values of x between -1.5 and 1.5.