Name __________________________________________________ 28-1: Representing Functions
Homework
Math 8
For Items #1 – 3, match each verbal description with its corresponding function representation.
1. Adam is allowed 15 text messages a day
on his parents’ cell phone plan.
A.
x
1
2
3
4
5
Matches letter _______
2. Ana Lucia rents a car for $20 a day.
y
20
40
60
80
100
B.
Matches letter _______
3. Jabar starts a new job with 5 vacation
days. He earns 2 additional days for
every year he works.
C. y = 15x
Matches letter _______
For Items #4 - #6, match each verbal description with its corresponding equation and table of
values.
4. Nina starts 1.5 miles from the park path entrance and inline skates at 10 miles per hour.
matches equation ______
matches table ______
5. Sasha starts 0.5 miles from the park entrance and runs at 5 miles per hour.
matches equation ______
matches table ______
6. Tavon starts at the park entrance and rides his bike at 15 miles per hour.
matches equation ______
A. y = 5x + 0.5
B. y = 15x
C. y = 10 x + 1.5
A.
matches table ______
x
0
1
2
3
4
y
0
15
30
45
60
B.
x
0
1
2
3
4
y
1.5
11.5
21.5
31.5
41.5
C.
x
0
1
2
3
4
y
0.5
5.5
10.5
15.5
20.5
Model with mathematics. For Items #7 - #9, Match each graph of a function with its
corresponding equation, verbal description, and table of values.
7.
8.
Matches equation _______
Matches description ______
Matches table _______
9.
Matches equation _______
Matches description ______
Matches table __
Equations
A. y = 10 x
B. y = 30 − 4 x
C. y = 25
Matches equation _______
Matches description ______
Matches table _______
Descriptions
A. Javier has $30 in his savings account. He
spends $4 a week.
B. Serena has $25 in her savings account. She
doesn’t save or spend any money.
C. Lila saves $10 a week.
Tables
A.
B.
x
0
1
2
3
4
y
30
26
22
18
14
C.
x
0
1
2
3
4
y
0
10
20
30
40
x
0
1
2
3
4
y
25
25
25
25
25