Concept explainers
To find: Rate of change for each linear function.
Answer to Problem 8PPS
The rate of change in linear function is increase of 0.25 $/message.
Explanation of Solution
Given:
Calculation:
Consider the table that shows relation between number of messages and cost.
Number of messages [x] | Cost ($) [y] |
4 | 1.00 |
6 | 1.50 |
8 | 2.0 |
10 | 2.50 |
The rate of change is change in one quality with respect to another quantity.
Mathematically:
Thus, the rate of change is change in cost with respect to change in number of messages.
So,
=
=0.25
Conclusion:
Therefore, rate of change in linear function is increase of 0.25 $/message.
Chapter 8 Solutions
Pre-Algebra, Student Edition
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