Download 8–5 1. Complete the function table. 2. Write the rule of the function

8–5
Name
Date
1. Complete the function table.
x
0
1
2
3
2. Write the rule of the function table, using words.
3. Using the variables x and y, write an equation that
shows that y is a function of x.
y
0
2
4
8
5
4. Each ordered pair in the table represents a point.
Use the table to write each set of ordered pairs.
5. On the coordinate plane at the right, use the ordered y
10
pairs to plot and label each point. Then use a
9
8
ruler and draw a segment to connect the points.
7
6
5
4
3
2
1
0
1 2 3 4 5 6 7 8 9 10 x
6. Compare the y-coordinate of each point to its
x-coordinate. Describe the relationship, using words.
7. How does the pattern on the coordinate plane compare
to the pattern in the function table?
8. What is the y-coordinate of a point on the line
graph if the x-coordinate is 8? Explain how you found
your answer.
UNIT 8 LESSON 5
4_066905_U08L05.indd 221
Graph a Function
221
4/18/08 9:30:36 AM
8–5
Name
Date
1. Complete the function table.
2. Write the rule of the function table, using words.
Multiply x by 2 to get y.
3. Using the variables x and y, write an equation that
shows that y is a function of x.
y = 2x
x
0
1
2
3
y
0
2
4
6
4
8
5
10
4. Each ordered pair in the table represents a point.
Use the table to write each set of ordered pairs.
(0, 0), (1, 2), (2, 4), (3, 6), (4, 8), and (5, 10)
5. On the coordinate plane at the right, use the ordered y
10
pairs to plot and label each point. Then use a
9
8
ruler and draw a segment to connect the points.
7
6
5
4
3
2
1
0
(5, 10)
(4, 8)
(3, 6)
(2, 4)
(1, 2)
(0, 0)
1 2 3 4 5 6 7 8 9 10 x
6. Compare the y-coordinate of each point to its
x-coordinate. Describe the relationship, using words.
Each y-coordinate is 2 times its corresponding x-coordinate.
7. How does the pattern on the coordinate plane compare
to the pattern in the function table?
They are the same.
8. What is the y-coordinate of a point on the line
graph if the x-coordinate is 8? Explain how you found
your answer.
The y-coordinate would be 16. Multiply 8 times 2.
UNIT 8 LESSON 5
4_066905_U08L05.indd 221
Graph a Function
221
4/18/08 9:30:36 AM