Answer:
The slope of a line is the change in y compared to the change in x between two points on the line. In this case, both points have the same x-value (1).
Since the change in x is zero (1 - 1 = 0), the slope is technically undefined. However, some consider this a vertical line with an infinite slope.
However, for most purposes, we can say the line does not exist mathematically because it's a vertical line through a single x-value.
So, the slope of the line that passes through the points (-1,-7) and (1,-13) is -3.
