graph one cycle of the given function state the period ampl

graph one cycle of the given function. state the period , amplitude, phase shift, and vertical shift of the function

7. y=-1/3 cos (1/2x+pi/3)

11. y=-3/2cos (2x+pi/3) - 1/2

Solution

7.)

y = A sin(Bx + C) + D

Amplitude = -1/3

Period= 2pi/(1/2)=4*3.14=12.56

phase shift = - (pi/3)/0.5=-2pi/3

vertical shift= 0