
Concept explainers
To calculate: To find the constant rate of change for the linear function and interpret its meaning

Answer to Problem 8.5.1EP
Rate of change is
Explanation of Solution
Given information: Linear function is
Formula Used:
Rate of change of function is calculated as
Calculation:
Linear function is given
From the graph, points on graph are
Rate of change is calculated as
Thus, rate of change of given function is
Since the rate of change is negative, this means that value of y-coordinate decreases with the increase in x-coordinate.
Here, magnitude of rate of change is
Conclusion:
Hence, rate of change is
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