Answer
$m=3$
Work Step by Step
To find the slope, we use the formula $m=\frac{y_2-y_1}{x_2-x_1}$.
We plug in the $x$ and $y$ values from the given coordinates: $m=\frac{-1-5}{3-5}$
We simplify above and below the fraction bar with subtraction: $m=\frac{-6}{-2}$
Then, we divide the fraction: $m=3$