Question

Graph, if shifted how much,and which way ?

Answer 1

Transformation of Periodic Functions [cos(x)]

For horizontal shifting: +c (left) -c (right)
For vertical shifting: +d (up) -d (down)

For horizontal scaling (period): b↑ compressing b↓ stretching
For vertical scaling (amplitude): a>1 stretching 0<a<1 compressing

Refer to the chart I attached

I hope that helps!

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