Without your graphing calculator, determine if each of the following functions is even, odd, or neither. Explain how you determined your choice. Then, check your answer with your graphing calculator.

1. $y=\cos(3x)$

   Hint (a):

   You should know by now that $y=\cos{x}$ is an even function. But what about $y=\cos(3x)$? What does the $3$ do to the parent graph?

2. $y = |2x|$

   Hint (b):

   Compare to $y = |x|$.