Express the following rule in function notation: “subtract 6, then divide by 9”. Select the correct answer:

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1. 2.

3. 4.

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1. True

2. False

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1. 2.

3. 4.

Find a function of the line segment joining the points (5, 19) and (10, 34). Select the correct answer:

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1. f (x) = 3x + 4

2. f (x) = 6x + 4

3. f (x) = 3x - 4

4. f (x) = 3x - 8

What is the average rate of change of the function f (x) = 4 x - 2 between x = 6 and x = 7? Select the correct answer:

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1. 4

2. - 4

3. 2

4. - 2

True or False: To obtain the graph of g (x) = 27|x + 9|, we must stretch the graph of f (x) = 3|x + 9| vertically by the factor of 9.

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1. True

2. False

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1. vertex (2.5, - 6.25); x-intercepts 0, 5 ; y-intercept 0

2. vertex (3.5, 6.25); x-intercepts 0, 7 ; y-intercept 0

3. vertex (5, 12.5); x-intercepts 0, 4 ; y-intercept 0

4. vertex (- 2.5, - 5.25); x-intercepts 0, 7 ; y-intercept 0

A rectangular building lot is five times as long as it is wide. Find a function that models its area, A, in terms of its width, w.

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1. 2.

3. 4.

Find f (g (x)) for f (x) = 3 x + 7 and g(x) = 5 x - 9. Select the correct answer:

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1. f (g (x)) = 15x - 20

2. f (g (x)) = 15x - 26

3. f (g (x)) = 9x - 14

4. f (g (x)) = 25x - 36

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1. 2.

3. 4.