Course:MATH102/Question Challenge/2010 December 02b

Question

Suppose the tangent line to the graph of y = ƒ(x) at x = 1 is y = 2x + 1, and ƒ(3) = 2.

(b) What is the average rate of change of ƒ on the interval 1 ≤ x ≤ 3?

Solutions

[show]Solution
$f(1)=2(1)+1$ $f(1)=3$ $m_{a}vg={\frac {2-3}{3-1}}$ $m_{a}vg=-1/2$