Fundamentals of Statistics, Sullivan - Complete test bank - exam questions - quizzes (updated 2022)

Ch. 16 Appendix B: Lines (on CD)
16.1 Lines
1 Calculate and interpret the slope of a line.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Find the slope of the line through the points and interpret the slope.
1)
y

10



5

(5, 1)
(0, 0)
-10 -5 5 10 x


-5



-10




1
A) ; for every 5-unit increase in x, y will increase by 1 unit
5
B) 5; for every 1-unit increase in x, y will increase by 5 units
1
C) - ; for every 5-unit increase in x, y will decrease by 1 unit
5
D) -5; for every 1-unit increase in x, y will decrease by 5 units

2)
y
10



5


(-2, 0)
-10 -5 5 10 x
(0, -2)

-5



-10

A) -1; for every 1-unit increase in x, y will decrease by 1 unit
B) 1; for every 1-unit increase in x, y will increase by 1 unit
C) -2; for every 1-unit increase in x, y will increase by -2 units
D) 2; for every 1-unit increase in x, y will decrease by -2 units




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, 3)
y
10



5
(0, 3)
(-3, 0)
-10 -5 5 10 x


-5



-10


A) 1; for every 1-unit increase in x, y will increase by 1 unit
B) -1; for every 1-unit increase in x, y will decrease by 1 unit
C) 3; for every 1-unit increase in x, y will increase by 3 units
D) -3; for every 1-unit increase in x, y will decrease by 3 units

4)
10 y




5




-10 -5 5 x

(2, -4)
-5
(6, -5)


-10
1
A) - ; for every 4-unit increase in x, y will decrease by 1
4
B) -4; for every 1-unit increase in x, y will decrease by 4 units
1
C) ; for every 4-unit increase in x, y will increase by 1 unit
4
D) 4; for every 1-unit increase in x, y will increase by 4 units

Find the slope of the line containing the two points.
5) (5, -7); (-6, 9)
16 16 11 11
A) - B) C) D) -
11 11 16 16

6) (3, 0); (0, 5)
5 5 3 3
A) - B) C) D) -
3 3 5 5

7) (4, -1); (5, -3)
1 1
A) - 2 B) 2 C) - D)
2 2


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, 8) (-3, -7); (-3, -1)
1
A) undefined B) 6 C) - D) 0
6

9) (2, -5); (-2, -5)
1
A) 0 B) C) -4 D) undefined
4

2 Graph lines, given a point and the slope.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Graph the line containing the point P and having slope m.
5
1) P = (-6, -3); m = -
2
y
10


5



-10 -5 5 10 x

-5


-10



A) B)
y y
10 10


5 5



-10 -5 5 10 x -10 -5 5 10 x

-5 -5


-10 -10

C) D)
y y
10 10


5 5



-10 -5 5 10 x -10 -5 5 10 x

-5 -5


-10 -10



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, 2
2) P = (-3, -5); m =
3
y
10


5



-10 -5 5 10 x

-5


-10



A) B)
y y
10 10


5 5



-10 -5 5 10 x -10 -5 5 10 x

-5 -5


-10 -10


C) D)
y y
10 10


5 5



-10 -5 5 10 x -10 -5 5 10 x

-5 -5


-10 -10




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