Unit 3 MC Practice

An experiment at a science laboratory generates waves based on wind speed. The following data is collected for 32 seconds. Let V represent the wind speed in feet per second and let t represent the time in seconds. Write a sine equation that describes the wave. (Hint: sketch a graph of the points)

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Which equation represents the graph?

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• 2 units up

• 2 units down

Simplify the identity.

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• Horizontal dilation by a factor of 2

• Reflection across the x-axis

• Vertical dilation by a factor of 3