Functions Worksheet - Big Ideas Math Prealgebra: A Florida Standards Curriculum Teaching Edition Page 27
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47Quiz
6.1– 6.3
Progress Check
List the ordered pairs shown in the mapping diagram. Then determine whether
the relation is a function.
(Section 6.1)
1.
Input
Output
2.
Input
Output
10
0
− 5
0
20
1
− 4
5
2
30
− 3
10
40
3
− 2
Find the value of y for the given value of x.
(Section 6.2)
1
3. y = 10x; x = − 3
4. y = 6 − 2x; x = 11
5. y = 4x + 5; x =
—
2
Graph the function.
(Section 6.2)
x
6. y = x − 10
7. y = 2x + 3
8. y =
—
2
Use the graph or table to write a linear function that relates y to x.
(Section 6.3)
9.
10.
y
x
y
2
1
− 3
− 3
2
1
1
2
3
4
x
− 1
1
0
2
3
1
3
4
6
3
11.
PUPPIES
The table shows the ages of four puppies and
Age (weeks)
Weight (oz)
their weights. Use the table to draw a mapping diagram.
3
11
(Section 6.1)
4
85
12.
MUSIC
An online music store sells songs for $0.90 each.
6
85
(Section 6.2)
10
480
a. Write a function that you can use to fi nd the cost C
of buying s songs.
b. What is the cost of buying 5 songs?
13.
ADVERTISING
The table shows the revenue R
Advertising, A
Revenue, R
(in millions of dollars) of a company when it spends
0
2
A (in millions of dollars) on advertising.
(Section 6.3)
2
6
a. Write and graph a linear function that relates the
4
10
revenue to the advertising cost.
6
14
b. What is the revenue of the company when it
8
18
spends $15 million on advertising?
Sections 6.1– 6.3
Quiz
265
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