Practice 1-Trigonometric Function

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

• 7
• -2
• 3
• 6

What is the period of
y= 4 cos (5x)

• 2π/5
• π
• 5
• 5π

What is the equation of the graph?

• y = 2 cos x

• y = cos 2x

• y = 2 sin x

• y = sin 2x

What is the equation of the graph?

• y= 2 cos x

• y = sin 2x

• y= 2 sin x

• y= cos 2x

What is the equation of the graph?

• $y=2\sin\ x$

• $y=\frac{1}{2}\sin\ x$

• $y=\ 2\sin\ 2x$

• $y=\ \sin\ \frac{1}{2}x$

Find the period of  $y=2\sin\ \left(\frac{1}{4}x-\frac{\pi}{2}\right)$  

• π/2

• 8π

• 4π

• π

Find the amplitude of  $y=\ 4\cos\ \left(\frac{1}{4}x+\frac{\pi}{4}\right)$  

• 4

• 1/4

•  $\frac{\pi}{4}$  

•  $-\frac{\pi}{4}$  

Write an equation of a sine function with a period of π and amplitude of 7.

• y=7 sin2πx

• y=7 sinπx

• y=2 sin7x

• y=7 sin2x

 $y=\ \frac{1}{2}\sin\ x\ -1$  

• 
• 
• 
• 

Find the graph $y=2\cos\ x\ -2$  

• 
• 
• 
•