The slope of a line that passes through two points is given by:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Plugging the values of the points given we have that:
[tex]\begin{gathered} m=\frac{-5-5}{-16-9} \\ m=\frac{-10}{-25} \\ m=\frac{2}{5} \end{gathered}[/tex]Therefore the slope is 2/5
