Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 5 - Linear Functions - 5-1 Rate of Change and Slope - Practice and Problem-Solving Exercises - Page 297: 31


independent: number of people; dependent: cost of ticket; Rate of change or cost per person: $12

Work Step by Step

The cost depends on the number of people so the dependent variable is cost. That makes the number of people the independent variable. To find rate of change do $\frac{84-36}{7-3}$ which equals 12.
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