Answer:
Step-by-step explanation:
The slope of a line given two points can be found by using the formula
[tex]m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\ [/tex]
From the question we have
[tex]m = \frac{ - 13 - - 20}{ - 8 - 7} = \frac{ - 13 + 20}{ - 15} = - \frac{7}{15} \\ [/tex]
We have the final answer as
[tex] - \frac{7}{15} \\ [/tex]
Hope this helps you