precalc question

Question

Match the functons with their graphs. Enter the letter of the graph below which corresponds to the function. ( Click on image for a larger view )

 1.  

 2.  

 3.  

 4.  

A	B	C	D

Answer 1

A is 1

B is 4

C is 2

D is 3

I suggest you graph each one on your calculator and memorize the characteristics of ± Sine and Cosine functions.

Practice makes perfect with graphing.