Exercise 43 Page 248

To graph an inequality on a number line, we need to make note of two things: the direction of the inequality and whether it is strict. Observing the given inequality, we see that all values of $x$ are less than or equal to $\text{-}2.$ This means that the solution set lies to the left of $\text{-}2$ on a number line. Furthermore, the inequality symbol indicates that $x=\text{-}2$ is a solution, which we will mark with a closed circle on the number line at $\text{-}2.$