Question

the following chart shows \living wage\ jobs in rochester per 1000 working age adults over a 5 year period.
what is the average rate of change in the number of living wage jobs from 1997 to 1999?
jobs/year (please write answer as a decimal).
what is the average rate of change in the number of living wage jobs from 1999 to 2001?
jobs/year (please write answer as a decimal).
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Explanation:

Step1: Calculate average rate of change from 1997 to 1999

The formula for average rate of change is $\frac{y_2 - y_1}{x_2 - x_1}$. Here, $x_1 = 1997$, $y_1 = 635$, $x_2 = 1999$, $y_2 = 710$.
$\frac{710 - 635}{1999 - 1997}=\frac{75}{2}=37.5$

Step2: Calculate average rate of change from 1999 to 2001

Using the same formula, $x_1 = 1999$, $y_1 = 710$, $x_2 = 2001$, $y_2 = 745$.
$\frac{745 - 710}{2001 - 1999}=\frac{35}{2}=17.5$

Answer:

1997 - 1999: $37.5$
1999 - 2001: $17.5$