Question

What is the average rate of change from month 1 to month 4?

Answer 1

-2 cases per month.

Explanation:

To find average rate of change, we find the slope of the endpoints.

Slope=
`(rise)/(run)`

It "rose" by 16-22, or -6. It "ran" by 4-1 or 3. Therefore, we can use the slope equation to get:
`(-6)/(3)`, which is equivalent to -2.

Therefore, the average rate of change is a loss of 2 cases per month.