Test Bank for Precalculus, 4th Edition by Cynthia Y. Young

Test Bank for
Precalculus, 4th Edition(Young)
Chapter 1-11


Chapter 1 Functions and Their Graphs

1.1 Functions

1) Classify the following relationship as a function or not a function.
{(-17, 20), (17, 20), (-12, 20), (1, 20)}
A) a function
B) not a function
C) don't know
Answer: A
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01

2) Classify the following relationship as a function or not a function.
{(9, -18), (9, -2), (9, 15), (9, -3)}
A) a function
B) not a function
C) don't know
Answer: B
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01

3) Classify the following relationship as a function or not a function.
{(15, 10), (-10, -20), (-20, -16), (-14, 1), (-12, -14)}
A) a function
B) not a function
C) don't know
Answer: A
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01

4) Classify the following relationship as a function or not a function.
{(4, 10), (18, -2), (12, 2), (4, 16)}
A) a function
B) not a function
C) don't know
Answer: B
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01


1

,5) Determine if the equation x = is a function.
A) a function
B) not a function
C) don't know
Answer: A
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01

6) Determine if the equation 8 + 4 = 4 is a function.
A) a function
B) not a function
C) don't know
Answer: B
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01

7) Determine if the equation x = is a function with independent variable x and dependent
variable y.
A) a function
B) not a function
C) don't know
Answer: B
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01

8) Given the function f (x) = 5x - 4, evaluate f (x + 10).
A) 5x + 46
B) 5x - 46
C) 5 + 46
D) 5x + 6
Answer: A
Diff: 2 Var: 1
Chapter/Section: Ch 01, Sec 01

9) Given the function f (x) = - 3x + 2, evaluate f (x) - f (6).
A) - 3x + 18
B) - 3x - 20
C) - 3x - 18
D) x - 6
Answer: C
Diff: 2 Var: 1
Chapter/Section: Ch 01, Sec 01




2

,10) Given the function H(x) = 1 - , evaluate H(x - 5).
A) -4 -
B) -4 + 10x -
C) -24 + 7x -
D) -4 - x
Answer: C
Diff: 3 Var: 1
Chapter/Section: Ch 01, Sec 01

11) Given the function G(x) = 6 - 4x, evaluate G(4x + 2).
A) -16 + 16x + 12
B) -16 + 2
C) -16x - 14
D) -16x - 2
Answer: D
Diff: 2 Var: 1
Chapter/Section: Ch 01, Sec 01

12) Given the function G(x) = -7 - 6x, evaluate G(4).
A) 17
B) 31
C) -31
D) 4x - 7
Answer: C
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01

13) Given the function f (x) = - 5x - 15, evaluate .

A) 2x + h - 5

B)

C) 2x + h + 5
D) 1
Answer: A
Diff: 3 Var: 1
Chapter/Section: Ch 01, Sec 01




3

, 14) Given the function f (x) = -7 - 5x, evaluate .

A) 5
B) -5
C)

D) 1
Answer: B
Diff: 3 Var: 1
Chapter/Section: Ch 01, Sec 01

15) Given the function G(t) = - 7t + 3, evaluate .

A) h + 17
B) h - 17
C) h
D) h - 12
Answer: B
Diff: 3 Var: 1
Chapter/Section: Ch 01, Sec 01


16) Given the function G(t) = , state the domain in interval notation.

A) [10, ∞)
B) (-∞, 10) ∪ (10, ∞)
C) (-∞, ∞)
D) (-∞, -10) ∪ (10, ∞)
Answer: B
Diff: 1 Var: 1
Chapter/Section: Ch 01, Sec 01

17) Given the function f (x) = , state the domain in interval notation.
A) (-∞, -8] ∪ [8, ∞)
B) (-∞, -8) ∪ (8, ∞)
C) [-8, 8]
D) (-∞, -64] ∪ [64, ∞)
Answer: A
Diff: 2 Var: 1
Chapter/Section: Ch 01, Sec 01




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