Answer
($B$)
Work Step by Step
The average rate of change of $f$ over the interval $[a, b]$ is
Average rate of change of $f\displaystyle \ \ =\frac{f(b)-f(a)}{b-a}$
The units of the average rate of change of $f$ are units of $f(x)$ per unit of $x$.
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We see that the line connecting the points from $3$ to $10$ has a positive slope, while the regression line has a negative slope. Thus, the answer is (B) (greater than the regression line).
