A point moves on the y-axis vertically with simple harmonic motion. The y-coordinates (cm) of the point time t (seconds) is given by y=6cos (pi/4 t) a. Scale the axes and graph y as a function of t

A point moves on the y-axis vertically with simple harmonic motion. The y-coordinates (cm) of the point time t (seconds) is given by y=6cos (pi/4 t)

a. Scale the axes and graph y as a function of t for one complete cycle. 

b. Name all times during the cycle when the point is at the origin..

c. Name all the times during this cycle when the point is farthest above the origin.