Answer
The slope of the line is $\frac{1}{2}$.
Work Step by Step
Take first two points from the table.
$(x_1,y_1)=(-9,-2)$ and $(x_2,y_2)=(-5,0)$.
Use slope formula.
$m=\frac{y_2-y_1}{x_2-x_1}$
Substitute all the values.
$m=\frac{0-(-2)}{-5-(-9)}$
Simplify.
$m=\frac{2}{-5+9}$
$m=\frac{2}{4}$
$m=\frac{1}{2}$
Hence, the slope of the line is $\frac{1}{2}$.