Answer
$y=x-2$
Work Step by Step
Use the slope formula $m=\frac{y^2-y^1}{x^2-x^1}$ and the point-slope form $y-y_1=m(x-x_1)$ to solve this problem.
Passing through $(-2,-4)$ and $(1,-1)$
$\frac{-1+4}{1+2}=1$
$y+4=1(x+2)$
$y+4=x+2$
$y=x-2$