trig functions final

What is the period of y = 4Cos(2x)?

• 4π
• π
• 2π
• π/2

What is the difference between y = sinx and y = 4sinx when graphed?

• a period change
• an amplitude change
• a phase shift
• no difference in graphs

The graph of y = 8cosx is ________ than the graph of y = cosx.

• shorter
• taller
• wider
• narrower

The graph of y=(1/3)sinx is _________ than the graph of y=sinx.

• shorter
• taller
• wider
• narrower

The graph of y = 2cos(4x) is __________ than the graph of y = 2cos(x).

• shorter
• taller
• wider
• narrower

The graph of y=2sin(1/2 x) is __________ than the graph of y=2sin(x).

• shorter
• taller
• wider
• narrower

What is the difference between y=2sinx and y=2sin(3x) when graphed?

• period change
• amplitude change
• phase shift
• no change in the graph

A _________ function is one that has a pattern that repeats itself over and over again.

• reflected
• periodic
• translated
• stretch-shrink

The amplitude of y = 4Cos(2x) is...

• 4
• 2
• 8
• 1

The amplitude of y = -8sin(3x) is...

• 2
• -2
• 8
• -8