Question

Find the slope of the line through the points (7,8) and (-13, -13).

Answer 1

`(\stackrel{x_1}{7}~,~\stackrel{y_1}{8})\qquad (\stackrel{x_2}{-13}~,~\stackrel{y_2}{-13}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-13}-\stackrel{y1}{8}}}{\underset{run} {\underset{x_2}{-13}-\underset{x_1}{7}}} \implies \cfrac{ -21 }{ -20 } \implies {\large \begin{array}{llll} \cfrac{21 }{ 20 } \end{array}}`