Concept explainers
To state:The rate of change and make a graph
Answer to Problem 14HP
The rate of change is 3.
Explanation of Solution
Given: 3-unit increase in y for every 1-unit increase in x .
Calculation:
Consider that there is an increase of 3 units in the y axis per 1 unit change in the x axis.
Let us make a simple chart where there are a set of numbers in the x axis and their corresponding values for y axis.
x | y |
0 | 0 |
1 | 3 |
2 | 6 |
3 | 9 |
4 | 12 |
5 | 15 |
6 | 18 |
7 | 21 |
Plotting the following values, the following graph is plotted:
The rate of change of the values in a straight line is its slope.
The slope of a straight line is given by the formula:
Conclusion:Therefore, the rate of change is 3.
Chapter 8 Solutions
Pre-Algebra, Student Edition
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