SOLUTION: what is the phase shift and period of the following: y=-3sin(4x+pi/2)

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Question 454237: what is the phase shift and period of the following:
y=-3sin(4x+pi/2)
Found 2 solutions by Alan3354, robertb:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Shift = -pi/2
Period = pi/8

Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Phase shift is pi%2F8 units to the left.