Chapter 2 - Section 2.8 - The Derivative as a Function - 2.8 Exercises - Page 161: 5

See the image below.

Note that we make sure that the slope is zero at $x=0$ and is positive to the left of $x=0$ and negative to the right of $x=0$. The specific values estimated are based on drawing a tangent line at each point and estimating its slope.