Answer: Undefined
Step-by-step explanation:
When finding slope always thing rise over run, meaning y/x.
In order to find your y and x you need to find the difference between both values. You can use this equation:
y2 - y1
_____
x2 - x1
In this case it would be:
-4 - 4
____
3 - 3
Which gives you:
-8/0
It is not possible to divide anything by 0, making the slope undefined.