## Intermediate Algebra (12th Edition)

$m=\dfrac{7}{4}$
Using $m=\dfrac{y_1-y_2}{x_1-x_2}$ or the Slope Formula, the slope of the line through $( -8,-12 )$ and $( 8,16 )$ is \begin{array}{l}\require{cancel} m=\dfrac{-12-16}{-8-8} \\\\ m=\dfrac{-28}{-16} \\\\ m=\dfrac{\cancel{-4}(7)}{\cancel{-4}(4)} \\\\ m=\dfrac{7}{4} .\end{array}