Answer
$m=-\dfrac{12}{5}$
Work Step by Step
Using $m=\dfrac{y_1-y_2}{x_1-x_2}$ or the Slope Formula, the slope of the line passing through the given points $(
-3,4
)$ and $(
2,-8
)$ is
\begin{array}{l}\require{cancel}
m=\dfrac{4-(-8)}{-3-2}
\\\\
m=\dfrac{4+8}{-5}
\\\\
m=\dfrac{12}{-5}
\\\\
m=-\dfrac{12}{5}
.\end{array}