Using it's formula, it is found that the average rate of change in the interval [tex]\left(\pi, \frac{3\pi}{2}\right)[/tex] is of [tex]-\frac{16}{\pi}[/tex].
The average rate of change of a function is given by the change in the input divided by the change in the output.
In this problem, the points state that:
Hence the rate is given by:
[tex]r = \frac{-1 - 7}{\frac{3\pi}{2} - \pi} = -\frac{16}{\pi}[/tex]
More can be learned about the average rate of change at https://brainly.com/question/24313700
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