[tex](\stackrel{x_1}{6}~,~\stackrel{y_1}{24})\qquad \stackrel{origin}{(\stackrel{x_2}{0}~,~\stackrel{y_2}{0})} ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{0}-\stackrel{y1}{24}}}{\underset{run} {\underset{x_2}{0}-\underset{x_1}{6}}}\implies \cfrac{-24}{-6}\implies 4[/tex]
