374
Activity 4
1. Record the data from the graph in the table. Label the input and output variables.
500
400
300
200
100
0 1 2
Number of Weeks
3
Input Process Output
4
W A
H
Chapter 9

a. Make up a scenario that the graph can represent.
b. Explain your strategy for completing the table and compare it with the strategies of others in your group. c. Use the second column to show the process. d. Write a sentence and a function rule describing the amount in terms of the number of weeks. Confirm your rule with your calculator.
e. Write an equation to find the number of weeks if the amount is known.
Chapter 9
H
375

376
Making Connections
Activity 4 (continued)
2. Record the data from the graph in the table by yourself. Label the input and output variables.
30
20
10
0 2 4 6
Number of Hours
8
Input Process Output
10
H T
H
Chapter 9

a. Make up a scenario that the graph can represent.
b. Explain your strategy for completing the table and compare it with the strategies of others in your group. c. Use the second column to show the process. d. Write a sentence and a function rule describing the total cost in relation to time. Confirm your rule with your calculator.
e. Write an equation that gives the number of hours if the total cost is known.
f. Find the cost for 12 hours. g. Write and solve an equation for the problem: When is the cost
$42.50?
Chapter 9
H
377