SOLUTION: I need to find the amplitude, period, phase shift and translation as well as graph y=2sin(3x-pi/2)-1

Question 763669: I need to find the amplitude, period, phase shift and translation as well as graph y=2sin(3x-pi/2)-1
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
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Let's start with the simplest related function.
The graph for is . Its period is .
is the graph of , whose period is .
Substituting for translates the function units to the . That's the phase shift.
So, is the graph of (with the same period).
A factor of in front dilates the graph vertically to get , and the added at the end translates the function by unit:

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