Question

Asked Sep 26, 2019

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How do I find the points to graph y= -2sin(1/4x)

I understand that the period =8pi and the amplitude is 2

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Step 1

The graph of *y* = –2sin(*x*/4) is a reflection across the *x* axis and a horizontal stretching of the graph of *y* = sin *x*.

Compare the equation *y* = –2sin(*x*/4) with the equation *y* = *A* sin (*Bx* –*C*) + *D* and obtain the value of *B* as (1/4) and *A* as –2.

Step 2

The domain of *y* = sin *x* is the set of all real numbers and range is [–1,1].

Consider the key points of *y* = sin *x* as follows.

Step 3

First obtain the key points of *y* = sin(*x*/4) by dividing the first coor...

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