Question 1099756
Use the coodinates of the five quarter points of y=sin x to determine the corresponding quarter points on the graph of y=sin(3x-π) 

Quarter points of y = sin x:   (0,0)   (π/2 ,1)  (π,0)  (3π/2, -1)   (2π,0)

Quarter points of y = sin (3x-π):
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You need the graphs to do that.
DL the FREE graph software at

www.padowan.dk
Use Ins, enter sin(x), then sin(3x - pi)
Use different colors for clarity, and change the x-axis to "multiple of pi"