# What is the amplitude, period, phase shift and vertical displacement of y=3sin(3x-9)-1?

Feb 27, 2017

Amplitude = 3
Period = 120 degrees
Vertical Displacement = -1

#### Explanation:

For period use the equation: T = 360/n

n would be 120 in this case because if you simplify the equation above it would be:

$y = 3 \sin 3 \left(x - 3\right) - 1$

and with this you use the horizontal compression which would be the number after "$\sin$"