[tex]\bf (\stackrel{x_1}{-3}~,~\stackrel{y_1}{6})\qquad (\stackrel{x_2}{-5}~,~\stackrel{y_2}{9}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{9-6}{-5-(-3)}\implies \cfrac{9-6}{-5+3}\implies \cfrac{3}{-2}\implies -\cfrac{3}{2}[/tex]
