Sinusoidal Functions

What is the amplitude of the function:
f(x) = ⅔sin(⅕θ) + 4

• ⅔

• ⅕

• ¾

• 4

Which equation describes the graph shown?

• y = sin x

• y = cos x

• y = –sin x

• y = –cos x

Find the equation of the midline of the graph shown.

• y = 1

• y = 2

• y = 3

• y = 0

Which equation represents the graph?

• y = cos x – 3

• y = sin x – 3

• y = cos (x – 3)

• y = sin (x – 3)

Which function has a period of 2?

• y = sin x

• y = sin (π x)

• y = sin (2x)

• y = 2 sin x

Evaluate:  
2 sin(π/2) – 1

• –1

• 0

• 1

• –3

Find the period of the function: 
y = cos (x/2)

• 4π

• π/2

• π

• 2

What is the amplitude of the graph?

• 3

• 2

• -3

• -2

How do we find the period of the sinusoidal function below?
f(x) = asin(kx)+d

Sine or Cosine?

• y=sinx

• y=cosx