Unit Test — Unit test Answers
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21
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How does the graph of y = sec(x + 3) – 7 compare with the graph of y = sec(x)?
A
It is the graph of y = sec(x) shifted 3 units right and 7 units up.B
It is the graph of y = sec(x) shifted 3 units left and 7 units up.C
It is the graph of y = sec(x) shifted 3 units left and 7 units down.D
It is the graph of y = sec(x) shifted 3 units right and 7 units down.
23
The blades of a windmill turn on an axis that is 35 feet above the ground. The blades are 10 feet long and complete two rotations every minute. Which of the following equations can be used to model h, the height in feet of the end of one blade, as a function of time, t, in seconds? Assume that the blade is pointing to the right, parallel to the ground at t = 0 seconds, and that the windmill turns counterclockwise at a constant rate.
A
h = negative 10 sine (StartFraction pi Over 15 EndFraction t) + 35
B
h = negative 10 sine (Pi t) + 35
C
h = 10 sine (StartFraction pi Over 15 EndFraction t) + 35
D
h = 10 sine (Pi t) + 35
24
What is the equation of the graph below?
A
y = sec(x) + 2B
y = csc(x) + 2C
y = csc(x + 2)D
y = sec(x + 2)25
Suppose you want to transform the graph of the function into the graph of the function . Which transformations should you perform?
A
Reflect the graph of the first function across the x-axis, translate it units to the left, and translate it 2 units up.
B
Reflect the graph of the first function across the x-axis, translate it units to the right, and translate it 2 units up.
C
Reflect the graph of the first function across the line , translate it units to the left, and translate it 2 units up.
D
Reflect the graph of the first function across the line , translate it units to the right, and translate it 2 units up.
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