Changes in Period and Phase Shift of Sine and Cosine Functions Answers
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1
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Which transformations are needed to change the parent cosine function to ?
A
vertical compression of 3, horizontal stretch to a period of , phase shift of units to the left
B
vertical stretch of 3, horizontal compression to a period of , phase shift of units to the right
C
vertical compression of 3, horizontal stretch to a period of 10p, phase shift of units to the right
D
vertical stretch of 3, horizontal compression to a period of , phase shift of units to the left
2
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What is the phase shift of a periodic function?
A
a horizontal translation of the functionB
the horizontal length of one cycle of the functionC
the number of cycles of the function that occur in one horizontal unitD
a vertical translation of the function3
Which of the following could be the equation of the function below?
A
y = negative 2 cosine (4 (x + pi)) minus 1
B
y = 2 cosine (x + pi) + 1
C
y = negative 2 cosine (2 (x + pi)) minus 1
D
y = 2 cosine (4 (x + pi)) + 2
4
What is the equation of the graph below?
A
y = cosine (x + StartFraction pi Over 2 EndFraction)
B
y = cosine (x + 2 pi)
C
y = cosine (x + StartFraction pi Over 3 EndFraction)
D
y = cosine (x + pi)
5
What is the general equation of a sine function with an amplitude of 2, a period of and a horizontal shift of units?
A
y = 2 sine (2 (x minus pi))
B
y = 2 sine (4 (x + pi))
C
y = sine (0.5 (x minus pi))
D
y = sine (2 (x + pi))
6
Which of the following is the graph of y = sin(0.5x)?
A
On a coordinate plane, a curve crosses the y-axis at (0, 0). It has a maximum of 1 and a minimum of negative 1. it goes through 2 cycles at 24 pi.
B
On a coordinate plane, a curve crosses the y-axis at (0, 0). It has a maximum of 1 and a minimum of negative 1. it goes through 2 cycles at 2 pi.
C
On a coordinate plane, a curve crosses the y-axis at (0, 0). It has a maximum of 1 and a minimum of negative 1. it goes through 1 cycle at 8 pi.
D
On a coordinate plane, a curve crosses the y-axis at (0, 0). It has a maximum of 1 and a minimum of negative 1. it goes through 2 cycles at 8 pi.
7
What is the equation of the graph below?
A
y = sine (StartFraction x Over 3 EndFraction)
B
y = sin(3x)C
y = sin(0.3x)D
y = sine (StartFraction 2 x Over 3 EndFraction)
8
What is the period of y = sin(3x)?
A
StartFraction pi Over 3 EndFraction
B
StartFraction 2 pi Over 3 EndFraction
C
3 pi
D
6 pi
9
Which term gives the horizontal length of one cycle of a periodic function?
A
amplitudeB
periodC
frequencyD
phase shift10
The graph of is the graph of the y = cos(x) shifted in which direction?
A
units to the left
B
units to the right
C
units up
D
units down
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