Respuesta :

harpazo

Let m = slope

m = (2 - 1)/(2 - 5)

You finish.

[tex]\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{2}~,~\stackrel{y_2}{2}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{2}-\stackrel{y1}{5}}}{\underset{run} {\underset{x_2}{2}-\underset{x_1}{1}}}\implies \cfrac{-3}{1}[/tex]

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