find the slope of the line given the following ordered pairs

The given points are (-1,-1) and (-3,-2)
The slope is given by the formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]So it follows:
[tex]m=\frac{-2+1}{-3+1}=\frac{-1}{-2}=\frac{1}{2}[/tex]The slope is 1/2 or 0.5.