Answer:
The answer is undefined because it has a denominator of 0.
Explanation:
When finding slope using two points, use the format y-y1/x-x1. First, plug in both of your points to get this: -6--6/-8--8. -6--6 equals 0, and -8--8 equals 0. So, your slope would be 0/0. Because your slope has a denominator of 0, the answer would be undefined. Hope this helped and let me know if you have questions!