Vertical and Phase Shifts of Sine and Cosine

The period of a function is

What is the period of either graph?

y = sin(x) & y = cos (x)

What is the period of

y= 4 cos (5x)

What is the phase shift for

y = 4 cos(x +π) - 2?

8. What is the phase shift for y = 4cos(¹/₂x +π) - 2?

Identify the vertical shift of the following equation:  $$f\left(x\right)=-4\cos\left(15x\right)+2$$  

What is the vertical shift for

y = 4 cos(x +π) - 2?