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A sine function has the following key features:

Period = π

Amplitude = 2

Midline: y=−2

y-intercept: (0, -2)

 

The function is a reflection of its parent function over the x-axis.

 

Use the sine tool to graph the function. The first point must be on the midline and the second point must be a maximum or minimum value on the graph closest to the first point.

 Jan 19, 2020
 #1
avatar+20428 
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Reflection across x - axis means multiply by -1

 

- sin        

period = pi

     -sin ( 2x) 

Amplitude 2

    -2 sin(2x)

Midline y = -2   (usually it would be 0  ....  shift it down 2)

    -2 sin(2x) - 2

y-intercept -2       does not change anything on this sine function....

 

 

 

Picture here:

https://www.desmos.com/calculator/f1rhbw8zey

 Jan 19, 2020
edited by ElectricPavlov  Jan 19, 2020

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