MSM07G7_RESBK_Ch05_020-027.pe
2/6/06
9:46 AM
Page 21
Name
Date
Class
Practice B
LESSON
5-3 Slope and Rates of Change
Tell whether the slope is positive or negative. Then find the slope.
1.
2.
y
4
y
4
(1, 3)
(2, 2)
(3, 1)
2
2
(3, 2)
x
4
2
O
2
x
4
4
2
O
2
2
2 (0, 2)
4
4
negative; 1
positive; 3
4
4
Use the given slope and point to graph each line.
1
1
4. 3; (1,2)
3. 2; (2,4)
y
y
4
4
2
2
2
x
4
2
O
2
4
2
4
x
O
4
2
2
4
Tell whether each graph shows a constant or variable rate of change.
5.
6.
y
y
4
4
2
2
x
x
4
2
O
2
4
4
2
O
2
2
4
4
constant
variable
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All rights reserved.
21
2
4
Holt Mathematics
MSM07G7_RESBK_Ch05_077-095.pe
2/6/06
9:54 AM
Page 81
Practice A
5-3 Slope and Rates of Change
Puzzles, Twisters, & Teasers
5-2 At This Rate...
LESSON
LESSON
Choose the letter for the best answer.
Draw a line to connect each rate to the equivalent unit rate.
$22.80
1. 8 lb
18 ft
1s
O
288 ft
2. 16 s
$2.75
1 lb
I
4
$16.50
3. 6 lb
17.6 ft
1s
M
2
792 ft
4. 45 s
$0.05
1 min
1. What is the slope of the line?
N
$2.85
1 lb
K
$4.05
6. 75 min
$0.06
1 min
A
$3.33
$2.28
L. 3 lb
$45.36
[O]
8. 嘷
O. 21 gal
$38.97
B. 18 gal
$2.16
9. S. 36 min
$3.30
[A]
A. 嘷
60 min
$5.04
G. 72 min
$49.92
W. 12 yd
$65.44
R. 嘷
16 yd
2
5.
1
A 2
B 3
嘷
D 3
B 2
3. slope 2; (1,2)
$57.25
T. 25 gal
C
R
O
A
K
R
O
O
M
10.
2.
9.
1.
10.
2.
8.
4.
1
4. slope 1; (2,0)
y
y
4
4
2
2
x
4
2
O
2
x
4
4
2
2
4
4
y
y
x
19
Holt Mathematics
x
2
Holt Mathematics
Use the given slope and point to graph each line.
1
1
2. 2; (2, 1)
1. 3; (3, 5)
y
4
(1, 3)
(2, 2)
(3, 1)
4
(3, 2)
4
x
4
4
2
y
y
2
x
2
variable
20
Practice C
5-3 Slope and Rates of Change
2.
O
O
2
2
2 (0, 2)
4
4
2
4
2
x
4
x
4
2
O
2
2
negative; 1
1
4
4
4
y
y
2
2
4
4
4
2
x
4
4
2
x
x
2
2
2
4
Tell whether each graph shows a constant or variable rate of change.
4.
3.
y
y
1
4. 3; (1,2)
3. 2; (2,4)
O
2
4
positive; 3
Use the given slope and point to graph each line.
2
O
2
4
2
4
2
LESSON
Tell whether the slope is positive or negative. Then find the slope.
y
O
2
2
2
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Practice B
5-3 Slope and Rates of Change
2
4
2
O
2
2
LESSON
2
2
6.
constant
4
O
2
2
4
(1, 4)
Tell whether each graph shows a constant or variable rate of change.
7.
1.
4
C 2
D 2
嘷
2
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2
4
1
C 3
5.
6.
O
2
Use the given slope and point to graph each line.
$2.92
C. 嘷
4 lb
Where do tadpoles hang their coats?
3.
x
2
4
4
1
A 3
Write the letters that are next to your answers above the
problem numbers to solve the riddle.
A
x
4
7. E. 4.5 lb
N
2
(2, 2)
4 2 O
(1, 2)2
Next, choose the best buy. Circle the letter next to your answer.
I
y
(3, 4)
4
(1, 4)
(0, 1)
$3.74
5. 68 min
$34.32
10. P. 8 yd
2. What is the slope of the line?
y
4
x
O
2
O
2
4
4
2
O
2
2
4
4
2
4
2
2
4
variable
Tell whether each graph shows a constant or variable rate of change.
6.
y
y
4
4
2
2
2
O
2
4
4
2
O
2
2
4
4
constant
variable
2
8
constant
x
x
4
10
a. Is the cost per pound a constant or
a variable rate?
Cost ($)
5.
constant
5. The graph at the right shows the cost
per pound of buying grapes.
b. What is the cost per pound of
grapes?
4
6
4
$2.50
2
0
0
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Copyright © by Holt, Rinehart and Winston.
Holt Mathematics
Copyright © by Holt, Rinehart and Winston.
All rights reserved.
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22
2
4
6
Weight (lb)
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