Precalculus Examples

$y = x - 9$ , $(0, 0)$ , $(7, - 6)$

The first point $(0, 0)$ does not fall on the graph. The points must be on the graph to be able to calculate the average rate of change between them.

Point $(0, 0)$ does not fall on the graph

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$