### Home > APCALC > Chapter 9 > Lesson 9.2.1 > Problem 9-52

9-52.

The graph at right shows . Use it to answer the following questions. Homework Help ✎

Over what interval(s) is

concave up?is concave up whenis positive. Where is the given graph positive?

Estimate

.This is asking for the slope of the given graph at

.

At what

-value(s) doeshave a point of inflection?This is where

changes sign. Where does the given graph change from negative to positive and vice versa?

At what

-value(s) doeshave a minimum value?has a minimum where its slope changes from negative to positive.

The slope ofis. So where doeschange from negative to positive?