Answer:
Undefined
Step-by-step explanation:
The equation for slope is:
[tex]Slope = \frac{y_2-y_1}{x_2-x_1}[/tex]
Let's plug the given points into the equation:
[tex]Slope = \frac{-6-5}{4-4}=\frac{-11}{0}[/tex]
Since the change in x is 0, the slope is undefined