5.7 Graphing Trig functions

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

• 4π
• π
• 2π
• π/2

The amplitude of y = -8sin(3x)+5...

• 5

• 3

• -8

• 8

what is the amplitude of
y = 3sin (7x) -2

• 7
• -2
• 3
• 6

11.  What is the equation of graph? 

• y = sin 5x
• y =  cos 5x
• y = 5 sin x
• y = 5 cos x 

14.  What is the amplitude of the graph? 

• 1
• 3
• 6
• 9

What is the period?

• π/4
• π/2
• 3π/4
• π