Intermediate algebra with applications and visualization 5th edition by rockswold krieger test bank
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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Evaluate f(x) at the given value of x.
1) f(x) = 3x - 3; x = -3
A) -10
B) 11
D) -12
C) 12
Answer: D
2) f(x) =
A)
x; x =
4
25
5
2
B)
2
5
C)
4
25
D)
2
25
Answer: B
3) f(x) = x2 + 3; x = 9
A) 80
B) 86
C) 81
D) 84
Answer: D
4) f(x) =
A)
x
; x = -11
x+3
1
3
B)
11
8
C)
1
4
D) -
11
8
Answer: B
Write a formula for the function described.
5) Function C computes the number of centimeters in x inches. (Hint: there are 2.54 centimeters in one inch.)
2.54
x
A) C(x) =
B) C(x) = x - 2.54
C) C(x) =
D) C(x) = 2.54x
x
2.54
Answer: D
6) Function I computes the number of inches in x centimeters. (Hint: there are 2.54 centimeters in one inch.)
2.54
x
A) I(x) =
B) I(x) = 2.54x
C) I(x) = 2.54 - x
D) I(x) =
x
2.54
Answer: D
7) Function F computes the number of square feet in x square yards.
A) F(x) = 9x
B) F(x) = 9 - x
C) F(x) =
9
x
D) F(x) =
x
9
Answer: A
8) Function Y computes the number of square yards in x square feet.
9
x
A) fY(x) =
B) Y(x) = x - 9
C) Y(x) =
x
9
D) Y(x) = 9x
Answer: C
9) Surveyors use the "link" as a unit of measure. Function i computes the number of inches in x links. (Hint: there
are 7.92 inches in one link.)
7.92
x
A) i(x) = x + 7.92
B) i(x) = 7.92x
C) i(x) =
D) i(x) =
x
7.92
Answer: B
1
10) Surveyors use the "link" as a unit of measure. Function l computes the number of links in x inches. (Hint: there
are 7.92 inches in one link.)
7.92
x
A) l(x) =
B) l(x) = 7.92x
C) l(x) = 7.92 - x
D) l(x) =
x
7.92
Answer: D
11) Bob buys a car that gets 10 miles per gallon of gasoline. Function M computes the number of miles that Bob can
travel with x gallons of gasoline.
10
x
A) M(x) =
B) M(x) = x + 10
C) M(x) = 10x
D) M(x) =
x
10
Answer: C
Write the function f as a set of ordered pairs. Give the domain and range of f.
12) f(-4) = -3, f(0) = 4, f(7) = 8, f(10) = 6
A) f = {(-4, -3), (0, 4), (7, 8), (10, 6)}; D = {-4, 0, 7, 10}; R = {-3, 4, 6, 8}
B) f = {(-3, -4), (4, 0), (8, 7), (6, 10)}; D = {-4, 0, 7, 10}; R = {-3, 4, 6, 8}
C) f = {(-4, -3), (0, 4), (7, 8), (10, 6)}; D = {-3, 4, 6, 8}; R = {-4, 0, 7, 10}
D) f = {(-3, -4), (4, 0), (8, 7), (6, 10)}; D = {-3, 4, 6, 8}; R = {-4, 0, 7, 10}
Answer: A
13) f(f) = -6, f(g) = -6, f(h) = -6, f(i) = -6
A) f = {(-6, f), (-6, g), (-6, h), (-6, i)}; D = {-6}; R = {f, g, h, i}
B) f = {(-6, f), (-6, g), (-6, h), (-6, i)}; D = {f, g, h, i}; R = {-6}
C) f = {(f, -6), (g, -6), (h, -6), (i, -6)}; D = {f, g, h, i}; R = {-6}
D) f = {(f, -6), (g, -6), (h, -6), (i, -6)}; D = {-6}; R = {f, g, h, i}
Answer: C
Sketch the graph of f by hand.
14) f(x) = -5x + 3
5
y
4
3
2
1
-5
-4
-3
-2
-1
1
2
3
4
5 x
-1
-2
-3
-4
-5
2
A)
B)
5
-5
-4
-3
-2
y
5
4
4
3
3
2
2
1
1
-1
1
2
3
4
5 x
-5
-3
-2
-1
-1
-1
-2
-2
-3
-3
-4
-4
-5
-5
C)
1
2
3
4
5 x
1
2
3
4
5 x
D)
5
-5
-4
-3
-2
y
5
4
4
3
3
2
2
1
1
-1
1
2
3
4
5 x
-5
15) f(x) =
-2
-3
-4
-4
-5
-5
y
2
1
-2
-1
-1
-3
3
-3
-2
-2
4
-4
-3
-1
1
x-1
4
5
-4
-1
Answer: D
-5
-4
y
1
2
3
4
5 x
-1
-2
-3
-4
-5
3
y
A)
B)
5
-5
-4
-3
-2
y
5
4
4
3
3
2
2
1
1
-1
1
2
3
4
5 x
-5
-3
-2
-1
-1
-1
-2
-2
-3
-3
-4
-4
-5
-5
C)
1
2
3
4
5 x
1
2
3
4
5 x
D)
5
-5
-4
-3
-2
y
5
4
4
3
3
2
2
1
1
-1
1
2
3
4
5 x
-5
-2
-3
-4
-4
-5
-5
y
2
1
-2
-1
-1
-3
3
-3
-2
-2
4
-4
-3
-1
16) f(x) = x2 - 3
5
-4
-1
Answer: D
-5
-4
y
1
2
3
4
5 x
-1
-2
-3
-4
-5
4
y
A)
B)
5
-5
-4
-3
-2
y
5
4
4
3
3
2
2
1
1
-1
1
2
3
4
5 x
-5
-3
-2
-1
-1
-1
-2
-2
-3
-3
-4
-4
-5
-5
C)
1
2
3
4
5 x
1
2
3
4
5 x
D)
5
-5
-4
-3
-2
y
5
4
4
3
3
2
2
1
1
-1
1
2
3
4
5 x
-5
17) f(x) =
-2
-3
-4
-4
-5
-5
y
2
1
-2
-1
-1
-3
3
-3
-2
-2
4
-4
-3
-1
x+3
5
-4
-1
Answer: D
-5
-4
y
1
2
3
4
5 x
-1
-2
-3
-4
-5
5
y
A)
B)
5
-5
-4
-3
-2
y
5
4
4
3
3
2
2
1
1
-1
1
2
3
4
5 x
-5
-1
-4
-3
-2
y
-1
1
2
3
4
5 x
1
2
3
4
5 x
-1
-2
-2
-3
-3
-4
-4
-5
-5
C)
D)
5
-5
-4
-3
-2
y
5
4
4
3
3
2
2
1
1
-1
1
2
3
4
5 x
-5
-4
-3
-2
-1
-1
-1
-2
-2
-3
-3
-4
-4
-5
-5
y
Answer: B
Evaluate the function as indicated.
18) Find f(0) using the graph of f provided below.
5
y
4
3
2
1
-5
-4
-3
-2
-1
1
2
3
4
5 x
-1
-2
-3
-4
-5
A) 0
B) 1
C) 2
Answer: B
6
D) 3
19) Find f(0) using the graph of f provided below.
5
y
4
3
2
1
-5
-4
-3
-2
-1
1
2
3
4
5 x
-1
-2
-3
-4
-5
A) -2
B) -1
C) 1
D) 0
C) 57
D) 47
C) 5
D) -5
Answer: D
20) Find f(0) using the table provided below.
x
0
10
20
-20
-10
f(x)
37
47
57
67
77
A) 0
B) 67
Answer: C
21) Find f(-5) using the table provided below.
x
0
5
10
-10
-5
f(x)
92
17
17
92
-8
A) -17
B) 17
Answer: B
22) This chart shows the fees for an 18-hole round of golf for each of the last 5 years at a local municipal golf course.
Assume that this chart defines a function with the name of f. Find f(2010).
Year
2008
2009
2010
2011
2012
Fee
$21
$23
$26
$26
$27
A) $27
B) $26
C) $21
D) $23
Answer: B
Express the verbal representation for the function f numerically.
23) Add 10 to the input x to obtain the output y. Let x = -3, -2, -1, 0, 1, 2, 3.
A) x -3 -2 -1 0 1 2 3
B) x -3
y 8 9 10 11 12 13 14
y -13
C) x -3 -2 -1 0 1 2 3
D) x -3
y 6
7 8 9 10 11 12
y 7
Answer: D
7
-2 -1 0 1 2 3
-12 -11 10 -9 -8 -7
-2 -1 0 1 2 3
8 9 10 11 12 13
24) Cube the input x to obtain the output y. Let x = -3, -2, -1, 0, 1, 2, 3.
A) x -3 -2 -1 0 1 2 3
B) x -3 -2 -1
y 3 2 1 0 1 2 3
y 9 4
1
x
0
1
2
3
x
-3
-2
-1
-3
-2
-1
C)
D)
y -27 -8 -1 0 1 8 27
y -6 -4 -2
0
0
0
0
1
1
1
2
2
4
2
4
3
9
3
6
Answer: C
25) Multiply the input x by 11 and then subtract 12 to obtain the output y. Let x = -3, -2, -1, 0, 1, 2, 3.
1
2
3
3
A) x - 3 -2 -1 0
B) x - 3 -2 -1 0 1 2
y 21 10 -1 12 -23 -34 -45
y 45 34 22 12 1 -10 -21
0
1 2 3
C) x - 3 -2 -1
D) x - 3 -2 -1 0 1 2 3
y -45 -34 -23 -12 -1 10 21
y -21 -10 1 12 22 34 45
Answer: C
26) Divide the input x by 2 and then add 4 to obtain the output y. Let x = -3, -2, -1, 0, 1, 2, 3.
x -3 -2 -1 0 1 2 3
x -3 -2 -1 0 1
2
3
5
7
9
11
11
9
7
5
A) y
B) y
3
4
5
5
4 -3 2
2
2
2
2
2
2
2
x
C) y
-3 -2 -1 0 1 2 3
11
9
7
5
5
4
3
2
2
2
2
x
D) y
-3 -2 -1 0 1 2 3
5
7
9
11
4
5
-3 2
2
2
2
Answer: A
Express the verbal representation for the function f symbolically.
27) Add 5 to the input x to obtain the output y.
A) y = 5x
B) y = x + 5
x
5
C) y = x - 5
D) y =
C) y = x - 3
D) y = 3x
Answer: B
28) Cube the input x to obtain the output y.
A) y = x3
B) y = 3 x
Answer: A
29) Multiply the input x by 15 and then subtract 2 to obtain the output y.
A) y = 15x - 2
B) y = 15 - 2x
C) y = 13x
D) y = 2 - 15x
Answer: A
30) Divide the input x by 2 and then add 3 to obtain the output y.
A) y = 2x + 3
B) y = 2x - 3
C) y =
Answer: D
Express the verbal representation for the function f graphically.
8
x
-3
2
D) y =
x
+3
2
31) Add 7 to the input x to obtain the output y.
10
y
8
6
4
2
-10 -8
-6
-4
-2
2
4
10
y
6
10 x
8
-2
-4
-6
-8
-10
A)
B)
-10 -8
-6
-4
10
8
8
6
6
4
4
2
2
-2
2
4
6
8
10 x
-10 -8
-6
-4
-2
-2
-2
-4
-4
-6
-6
-8
-8
-10
-10
C)
y
2
4
6
8
10 x
2
4
6
8
10 x
D)
10
-10 -8
-6
-4
y
10
8
8
6
6
4
4
2
2
-2
2
4
6
8
10 x
-10 -8
-6
-4
-2
-2
-2
-4
-4
-6
-6
-8
-8
-10
-10
Answer: B
9
y
32) Square the input x to obtain the output y.
10
y
8
6
4
2
-10 -8
-6
-4
-2
2
4
10
y
6
10 x
8
-2
-4
-6
-8
-10
A)
B)
-10 -8
-6
-4
10
8
8
6
6
4
4
2
2
-2
2
4
6
8
10 x
-10 -8
-6
-4
-2
-2
-2
-4
-4
-6
-6
-8
-8
-10
-10
C)
y
2
4
6
8
10 x
2
4
6
8
10 x
D)
10
-10 -8
-6
-4
y
10
8
8
6
6
4
4
2
2
-2
2
4
6
8
10 x
-10 -8
-6
-4
-2
-2
-2
-4
-4
-6
-6
-8
-8
-10
-10
Answer: A
10
y
33) Multiply the input x by 6 and then subtract 4 to obtain the output y.
10
y
8
6
4
2
-10 -8
-6
-4
-2
2
4
10
y
6
10 x
8
-2
-4
-6
-8
-10
A)
B)
-10 -8
-6
-4
10
8
8
6
6
4
4
2
2
-2
2
4
6
8
10 x
-10 -8
-6
-4
-2
-2
-2
-4
-4
-6
-6
-8
-8
-10
-10
C)
y
2
4
6
8
10 x
2
4
6
8
10 x
D)
10
-10 -8
-6
-4
y
10
8
8
6
6
4
4
2
2
-2
2
4
6
8
10 x
-10 -8
-6
-4
-2
-2
-2
-4
-4
-6
-6
-8
-8
-10
-10
Answer: B
11
y
34) Divide the input x by 2 and then add 4 to obtain the output y.
10
y
8
6
4
2
-10 -8
-6
-4
-2
2
4
10
y
6
10 x
8
-2
-4
-6
-8
-10
A)
B)
-10 -8
-6
-4
10
8
8
6
6
4
4
2
2
-2
2
4
6
8
10 x
-10 -8
-6
-4
-2
-2
-2
-4
-4
-6
-6
-8
-8
-10
-10
C)
y
2
4
6
8
10 x
2
4
6
8
10 x
D)
10
-10 -8
-6
-4
y
10
8
8
6
6
4
4
2
2
-2
2
4
6
8
10 x
-10 -8
-6
-4
-2
-2
-2
-4
-4
-6
-6
-8
-8
-10
-10
Answer: B
Give a verbal representation of f(x).
35) f(x) = 3x
A) Subtract 3 from the input x to obtain the output y.
B) Divide the input x by 3 to obtain the output y.
C) Multiply the input x by 3 to obtain the output y.
D) Add 3 to the input x to obtain the output y.
Answer: C
12
y
36) f(x) = 2x - 1
A) Divide the input x by 2 and then add 1 to obtain the output y.
B) Multiply the input x by 2 and then subtract 1 to obtain the output y.
C) Multiply the input x by 2 and then add 1 to obtain the output y.
D) Multiply the input x by 1 and then subtract 2 to obtain the output y.
Answer: B
37) f(x) = 5x -
1
4
A) Divide the input x by 5 and then add
1
to obtain the output y.
4
B) Divide the input x by 5 and then subtract
C) Multiply the input x by 5 and then add
1
to obtain the output y.
4
1
to obtain the output y.
4
D) Multiply the input x by 5 and then subtract
1
to obtain the output y.
4
Answer: D
38) f(x) = x2 - 10
A) Take the square root of the input x and then add 10 to obtain the output y.
B) Square the input x and then add 10 to obtain the output y.
C) Take the square root of the input x and then subtract 10 to obtain the output y.
D) Square the input x and then subtract 10 to obtain the output y.
Answer: D
Find the domain and the range of the function.
39)
y
10
-10
10
x
-10
A) D: x ≥
11
, R: y ≥0
7
B) D: x ≥ 0, R: y ≥ -
C) D: x ≤
11
, R: y ≤ 0
7
D) D: All real numbers, R: All real numbers
Answer: D
13
11
3
40)
y
10
-10
10
x
-10
A) D: x ≥ 0, R: y ≥ 0
C) D: x ≤ 0, R: y ≤ 0
B) D: All real numbers, R: All real numbers
D) D: x > 0, R: y > 0
Answer: B
41)
y
10
-10
10
x
-10
B) D: x < 6, R: y ≤ 0
D) D: x < 6 or x > 6, R: y < 0 or y > 0
A) D: All real numbers, R: y ≥ 0
C) D: x ≤ 6, R: y ≥ 0
Answer: C
42)
y
10
-10
10
x
-10
A) D: x > 0, R: y ≥ 0
C) D: x > 2, R: y ≤ 0
B) D: All real numbers, R: All real numbers
D) D: x > 4, R: y ≥ 0
Answer: B
14
Use the diagram to find the domain and range of f.
43)
A) D = All real numbers
R = All real numbers
C) D = {1, 2, 3, 4}
R = {-4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8}
B) D = {1, 2, 3, 4}
R = {-4, -2, 8}
D) D = {-4, -2, 8}
R = {1, 2, 3, 4}
Answer: B
44)
A) D = {-19, -2, 5}
R = {-3, 2.8, 12}
C) D = {-3, 12}
R = {-19, -2, 5}
B) D = {-3, 2.8, 12}
R = {-19, -2, 5}
D) D = All real numbers
R = All real numbers
Answer: B
Find the domain of the function.
45) f(x) = -9x - 3
A) x > 0
B) x > 3
C) x ≠ 0
D) All real numbers
B) x < 0
C) All real numbers
D) x ≠ 0
B) x ≠ 4
C) x ≠ -4
D) x > 0
B) All real numbers
C) x ≠ 16
D) x ≠ -4 and x ≠ 4
C) All real numbers
D) x >
Answer: D
46) f(x) = 5x2 + 7x + 5
A) x > 0
Answer: C
47) f(x) =
x
x-4
A) x < 0
Answer: B
48) f(x) =
(x + 4)(x - 4)
x2 + 16
A) x > 16
Answer: B
49) f(x) = 4x - 9
9
A) x <
4
B) x ≠
9
4
Answer: C
15
9
4
50) f(x) = 5 -
1
x
A) All real numbers
B) x < 1
C) x ≠ 0
D) x > 5
B) x < 2
C) x ≠ 0
D) All real numbers
B) All real numbers
C) x ≠ 0
D) x ≠ -9
Answer: C
51) f(x) =
3
x2
A) x > 3
Answer: C
52) f(x) =
2
x+9
A) x < 9
Answer: D
Determine whether the diagram could represent a function.
53)
A) Yes
B) No
Answer: A
54)
A) Yes
B) No
Answer: A
16
55)
A) Yes
B) No
Answer: B
56)
A) Yes
B) No
Answer: A
57)
A) Yes
B) No
Answer: B
58)
A) Yes
B) No
Answer: A
17
59)
A) Yes
B) No
Answer: B
Determine whether the graph represents a function.
60)
y
10
5
-10
-5
5
10
x
-5
-10
A) Yes
B) No
Answer: A
61)
y
10
5
-10
-5
5
10
x
-5
-10
A) Yes
B) No
Answer: A
18
62)
y
10
5
-10
-5
5
10
x
-5
-10
A) Yes
B) No
Answer: B
63)
y
10
5
-10
-5
5
10
x
-5
-10
A) Yes
B) No
Answer: B
64)
y
10
5
-10
-5
5
10
x
-5
-10
A) No
B) Yes
Answer: B
19
65)
y
10
5
-10
-5
5
x
10
-5
-10
A) Yes
B) No
Answer: A
66)
y
10
5
-10
-5
5
x
10
-5
-10
A) Yes
B) No
Answer: A
67)
5
y
4
3
2
1
-5
-4
-3
-2
-1
1
2
3
4
5 x
-1
-2
-3
-4
-5
A) No
B) Yes
Answer: A
20
68)
5
y
4
3
2
1
-5
-4
-3
-2
-1
1
2
3
4
5 x
-1
-2
-3
-4
-5
A) No
B) Yes
Answer: B
Determine whether S defines a function.
69) S = {(-2, 5), (2, -7), (6, -4), (8, -8), (11, 7)}
A) No
B) Yes
Answer: B
70) S = {(-9, 9), (-9, 2), (-1, -7), (3, 8), (8, -2)}
A) No
B) Yes
Answer: A
71) S = {(-5, -2), (-2, 3), (4, -6), (7, -8)}
A) Yes
B) No
Answer: A
72) S = {(-6, -8), (-6, -1), (-1, -9), (4, -3), (9, 7)}
A) No
B) Yes
Answer: A
73) S = {(-8, -8), (-3, 2), (-1, -1), (3, -6)}
A) Yes
B) No
Answer: A
74) S = {(-5, -2), (-1, 1), (2, 2), (2, 5)}
A) No
B) Yes
Answer: A
75) S = {(-5, -6), (-2, -3), (3, 2), (6, -2)}
A) No
B) Yes
Answer: B
76) S = {(-3, 3), (3, 1), (6, 9), (9, 3), (11, 1)}
A) Yes
B) No
Answer: A
21
Solve the problem.
77) The function f, given in the diagram below, computes the average cost of an item during year x. Evaluate f(
2004).
1999
2002
2004
2009
2012
420
390
470
510
570
A) 420
B) 470
C) 570
D) 510
Answer: B
78) The function given by the equation y = 3.785x will convert x gallons into y liters. If a container will hold 28
gallons, how many liters will it hold? Round your answer to two decimal places.
A) 105.98 liters
B) 106.12 liters
C) 106.55 liters
D) 105.28 liters
Answer: A
79) Bob finds that the cost of driving his truck is 65 cents per mile. Give a numerical representation, in the form of a
table, for a function f that computes the cost in dollars of driving x miles. Let x = 10, 20, 30, . . ., 60.
10
20
30
40
50
60 .
A) x
y 6.50 13.00 19.50 26.00 32.50 39.00
B) x
y
10
10.65
20
20.65
30
30.65
40
92.31
50
0.07
60 .
0.03
C) x
y
10
0.07
20
0.03
30
0.02
40
0.02
50
0.01
60 .
0.01
D) x
y
10
15.38
20
30.77
30
46.15
40
61.54
50
76.92
60 .
92.31
Answer: A
80) The table lists the monthly precipitation P in Salem, Missouri, where x = 1 corresponds to January and x = 9
corresponds to September.
x (month) 1
2
3
4
5
6
7
8 9
P (in.)
1.2 1.5 0.6 1.3 2.3 2.1 1.6 0.7 1.4
Determine the value of P during April.
A) 1.1 inches
B) 1.6 inches
C) 2.3 inches
Answer: D
22
D) 1.3 inches
81) The average price for a box of crackers from 2000 to 2010 can be approximated by P(x) = 0.102(x - 2000) + 1.87,
where x is the year. Evaluate P(2008) and round to the nearest hundredth. Interpret the result.
A) P(2008) = 2.69; the average price of a box of crackers in 2008 was $2.69 more than in 2000.
B) P(2008) = 2.78; the average price of a box of crackers in 2008 was $2.78.
C) P(2008) = 1.95; the average price of a box of crackers in 2008 was $1.95.
D) P(2008) = 2.69; the average price of a box of crackers in 2008 was $2.69.
Answer: D
82) The number of televisions in an average home can be modeled by N(x) = 0.04(x - 2004) + 1.4. Evaluate N(2012)
and interpret the result.
A) N(2012) = 2.1; there were an average of 2.1 televisions per home in 2012.
B) N(2012) = 1.72; there were an average of 1.72 televisions per home in 2012.
C) N(2012) = 1.5; there were an average of 1.5 televisions per home in 2012.
D) N(2012) = 1.72; there were an average of 1.72 more televisions per home in 2012 than in 2004.
Answer: B
Answer the question.
83) Which of the following correctly defines a function?
A) A function produces exactly one output for each valid input.
B) A function is a relation for which the range contains only unique values.
C) A function is a set of points that can be graphed on a cartesian graph.
D) A function is a relation that transforms input numbers into output numbers.
Answer: A
84) Which of the following transformations is a function?
A) Random Number from 1 to 10 → Random Number from 1 to 10
B) Last Name → Telephone Number
C) Social Security Number → Legal Last Name
D) Daily High Temperature → Date
Answer: C
Determine whether f is a linear function. If f is linear, give the values for m and b so that f may be expressed as
f(x) = mx + b .
1
85) f(x) = x - 2
7
A) Linear; m =
1
, b = -2
7
B) Linear; m = -
1
,b=2
7
D) Linear; m = 7, b = 2
C) Nonlinear
Answer: A
86) f(x) =
3
x
A) Linear; m = 3, b = 0
C) Linear; m =
B) Nonlinear
1
,b=0
3
D) Linear; m = 0, b =
Answer: B
23
1
3
87) f(x) = -8x
A) Linear; m = 8, b = 1
B) Linear; m = -8, b = 0
C) Nonlinear
D) Linear; m = -
1
,b=0
8
Answer: B
88) f(x) = 8.7 - 3.8x
A) Linear; m = 8.7, b = -3.8
C) Linear; m = -3.8, b = 8.7
B) Nonlinear
D) Linear; m = 3.8, b = -8.7
Answer: C
Determine whether the graph represents a linear function.
89)
y
4
2
-4
-2
2
4
6x
-2
-4
-6
A) No
B) Yes
Answer: B
90)
y
4
2
-4
-2
2
4
6x
-2
-4
-6
A) No
B) Yes
Answer: A
24
91)
y
4
2
-4
-2
2
4
6x
-2
-4
-6
A) Yes
B) No
Answer: B
92)
y
4
2
-4
-2
2
4
6x
-2
-4
-6
A) Yes
B) No
Answer: A
Determine whether f(x) could represent a linear function. If it could, write f(x) in the form f(x) = mx + b.
1
2
3
4
93) x
f(x) 8
10
12
14
A) No
B) Yes; f(x) = 2x + 6
Answer: B
94)
x
1
2
3
4
f(x) 6
8
9
19
A) Yes; f(x) = -2x + 4
B) No
Answer: B
95)
x
0
-2
-1
f(x) -6
4
-1
A) Yes; f(x) = 5x + 4
1
9
B) No
Answer: A
25
