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Chapter 6 - Assessment

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 
 
Determine which relation is a function.
 

 1. 
a.
mc001-1.jpg
c.
mc001-3.jpg
b.
mc001-2.jpg
d.
mc001-4.jpg
 

 2. 
a.
mc002-1.jpg
c.
mc002-3.jpg
b.
mc002-2.jpg
d.
mc002-4.jpg
 
 
Which function does the graph represent?
 

 3. 
mc003-1.jpg
a.
y = x + 1
c.
y = 2x – 1
b.
y = x
d.
y = 0.5x
 
 
Use the graph or table to write a linear function that relates y to x.
 

 4. 

x
–8
–4
0
4
y
6
3
0
–3
a.
y = mc004-1.jpgx
c.
y = mc004-3.jpgx
b.
y = mc004-2.jpgx
d.
y = mc004-4.jpgx
 

 5. 

x
–3
0
3
6
y
6
4
2
0
a.
y = mc005-1.jpgx – 4
c.
y = mc005-3.jpgx – 4
b.
y = mc005-2.jpgx + 4
d.
y = mc005-4.jpgx + 4
 

 6. 

x
–5
0
5
10
y
–4
5
14
23
a.
y = mc006-1.jpgx + 5
c.
y = mc006-3.jpgx + 5
b.
y = mc006-2.jpgx – 5
d.
y = mc006-4.jpgx – 5
 

 7. 

mc007-1.jpg
a.
y = mc007-2.jpgx – 2
c.
y = mc007-4.jpgx – 2
b.
y = mc007-3.jpgx + 2
d.
y = mc007-5.jpgx + 2
 

 8. 

mc008-1.jpg
a.
y = mc008-2.jpgx – 2
c.
y = mc008-4.jpgx + 2
b.
y = mc008-3.jpgx + 2
d.
y = mc008-5.jpgx – 2
 

 9. 

mc009-1.jpg
a.
y = –2
c.
x = y – 2
b.
y = x – 2
d.
x = –2
 

Other
 

 1. 
Extended Response  The table shows the balance b (in dollars) in your account after buying x songs online.
Number of Songs, x
4
12
20
Balance, b
$35.60
$26.80
$18.00
a.   Graph the data. Then describe the pattern.
b.   Write a linear function that relates the balance to the number of songs bought online.
c.   What is the balance in your account after buying 5 songs?
d.   What was the balance in your account before you bought the songs?
 



 
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