Name ________________________________________ Date __________________ Class __________________
LESSON
4-4
Proportional and Nonproportional Situations
Practice and Problem Solving: C
Answer the questions below.
Number of Dogs
Number of Cats
40
50
60
48
24
30
1. The values in the table represent the numbers
of dogs and cats at animal shelters. The
relationship is linear. Describe the relationship
in other ways.
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2. The graph shows the amount of time it takes Brittany to jog different
numbers of miles.
a. Is the relationship proportional or nonproportional? Explain.
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b. Identify and interpret the slope and y-intercept.
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3. The variables F, I, and C represent feet, inches, and centimeters respectively.
Table C
Equation A
I 12F
Centimeters
Inches
5
1.95
8
3.12
22
8.58
Equation B
I 0.39C
a. Is the relationship between centimeters and inches proportional?
Justify your answer in two different ways.
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b. Is the relationship between inches and feet proportional? Why or
why not?
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