Answer
(refer to the step by step part for the explanation)
$\\\\$The error is in the denominator. The correct value of the slope is:
$\\\\m=\dfrac{5}{-2}$
Work Step by Step
The error is in the denominator as it should have been $-3-(-1)$.
$\\\\$Thus, the correct calculation is:
$\\\\m=\dfrac{9-4}{-3-(-1)}
\\\\m=\dfrac{5}{-2}$
