[tex]\bf (\stackrel{x_1}{-9}~,~\stackrel{y_1}{-10})\qquad (\stackrel{x_2}{-2}~,~\stackrel{y_2}{-5}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-5-(-10)}{-2-(-9)}\implies \cfrac{-5+10}{-2+9}\implies \cfrac{5}{7}[/tex]
