Answer
$m=-\frac{4}{3}$
Work Step by Step
We can use the slope formula to calculate the slope of a line, m, that goes through two points.
$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$
$m=\frac{11-(-1)}{-12-(-3)}=\frac{11+1}{-12+3}=-\frac{12}{9}=-\frac{4}{3}$