SOLUTION: the period and amplitude respectively for the graph y=-3sin3x is?

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Question 323918: the period and amplitude respectively for the graph y=-3sin3x is?
Found 2 solutions by Alan3354, bankrep:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
the period and amplitude respectively for the graph y=-3sin3x is?
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The amplitude is always the abs value of the coefficient:
Amp = 3
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The period is 2pi/3.
It's always 2pi divided by the coefficient of the argument.

Answer by bankrep(1) About Me  (Show Source):
You can put this solution on YOUR website!
y=a sin(bx-c)+ d where |a| = amplitude, 2pi/b = period. -3x = |3| (amplitude) and 2pi/3 = period