Answer
The slope is $-2$.
Work Step by Step
To find the slope of a line, we use the formula:
$$m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}$$
We have two points that we can plug in for $x$ and $y$ in the formula.
$$\frac{-3 - 3}{2 - (-1)}$$
Simplify by adding or subtracting what is in parentheses:
$$\frac{-6}{3}$$
Divide to simplify:
$$m = -2$$