### Home > CALC > Chapter 5 > Lesson 5.4.1 > Problem 5-147

5-147.

The function *f*is continuous on the closed interval [2, 8] and has values that are in the table to the right. Homework Help ✎Using the sub-intervals [2, 5], [5, 7] and [7, 8], what is the trapezoidal approximation of

? On what sub-interval is the average slope a minimum?

I) [2, 5]

II) [5, 7]

III) [7, 8]

Test all answer choices and choose the lowest value. Recall that average slope is akin to saying average rate of change (AROC).