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1.
Which choice best describes the slope of the graph pictured?
A)
negative
B)
positive
C)
zero
2.
Which graph has a negative slope
A)
B)
C)
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3.
Use the graph below to complete the sentence.
The average rate of change from point B to point C is:
A)
negative.
B)
zero.
C)
positive.
4.
Use the graph below to complete the sentence.
The average rate of change from point B to point E is:
A)
negative.
B)
zero.
C)
positive.
5.
Find the value of x that satisfies the equation.
( )
( )
–16 –4.4 1
2.9x
−=
−
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6.
Find the value of x that satisfies the equation.
7.
Find the value of y that satisfies the equation.
( )
( )
–0.7 –4
–8.3 0.4
y−=
−
8.
Find the value of y that satisfies the equation.
( )
29.1 2
4.6 –8.3
y−=
−
9.
Find the value of m that satisfies the equation.
( )
( )
102.19 –8.9
–8.6 7.5 m
−=
−
10.
Find the value of x so that the line through the points (2.9,–0.8) and (x,–44.3) has slope
5.
11.
Find the value of x so that the line through the points (x,–9) and (6.8,7.6) has slope 1.
12.
Find the value of y so that the line through the points (–9.3,–8.9) and (–2.1,y) has slope
–2.
13.
Find the value of y so that the line through the points (9.6,y) and (–5.7,–12.2) has slope
1.
14.
Find the slope of the line through the points (–9.2,6.3) and (1.6,27.9).
15.
Find the slope of the line that passes through the points (–1,–0.8) and (3,26.4).
16.
Find the slope of the line that passes through the points (7,–8) and (27,4).
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17.
Find the value of y such that the line that passes through the points (0, y ) and (16,14)
has a slope of
4
5
.
18.
Find the value of x such that the line that passes through the points (–6,2) and (x,2) has a
slope of
2
5
.
19.
The following graph shows the average ACT score for students graduating from
Mascoot High School by year.
Find the slope of the line from 1990 to 1995.
20.
Are these points collinear? (Answer “Yes” or “No”.)
(7, –8), (9, –10), and (11, –11)
21.
Given a line segment with endpoints (7, –3) and (17, –11), is does the point (12, –7) lie
on that line segment? (Answer “Yes” or “No”.)
22.
Find the slope of the line through the points (0,
– 19
) and (
19
, 0).
23.
Find the slope of the line through the points
2
0, – 5



and
2,0
5



.
18
19
20
21
22
23
24
25
1980
1985
1990
1995
2000
2005
2010
Average ACT Score
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Use the following to answer questions 24-26:
A moving company charges a flat rate of $104.83 per day plus $0.62 per mile.
24.
Express the rate of change in dollars per mile.
25.
If a move is 7 miles longer than expected, how much extra will it cost?
26.
Jamie received an estimate for a move of $197.21. The actual move was 14 miles
shorter than expected. What was the actual cost of the move?
Use the following to answer questions 27-28:
A contractor charges by the square foot for pouring concrete sidewalks and driveways.
27.
If a 258 square foot driveway costs $1,328.70 and a 379 square foot driveway costs
$1,951.85, what is the rate per square foot?
28.
Matt’s driveway was 667 square feet and cost $3,435.05 to have concrete poured. If
Adam’s driveway costs $1,112.40 and Dixie has a driveway that is 116 square feet
larger, how much would Dixie expect to pay?
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Answer Key