Answer
The slope is undefined. Because the slope is undefined, the line is vertical.
Work Step by Step
To find the slope, we use the formula:
$$m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}$$
We now plug in the given points into this equation to find the slope of this line:
$$m = \frac{-3 - 3}{5 - 5}$$
Simplify:
$$m = \frac{-6}{0}$$
Since you cannot divide by $0$, the slope is undefined. Because the slope is undefined, the line is vertical.
