$\"\"$

\

The average rate of change of $\"\"$ with respect to $\"\"$ from $\"\"$ to $\"\"$ is defined as $\"\"$ .

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The average rate of change of $\"\"$ from $\"\"$ to $\"\"$ .

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$\"\"$ and $\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ for $\"\"$ .

\

$\"\"$

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$\"\"$

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ for $\"\"$ .

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$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The average rate of change of $\"\"$ is $\"\"$ .