Warm Up

Plot the set of numbers on the number line. $\{\sqrt{16}, \sqrt{0}, - \sqrt{9}, - \sqrt{1}, \sqrt{4}, \sqrt{3}\}$

Note

You need to estimate $\sqrt{3}$ . This should be closer to $\sqrt{4}$ , since $\sqrt{2}$ would be closer to $\sqrt{1}$ .

$\begin{array}{rcl} - 2 x & > & 8 \\ x & < & - 4 \end{array}$

Note

Q: What happens to the inequality symbol when you multiply or divide by a negative number?

A: The symbol changes directions.