Question

The slope of line l is 3/4 . Line m is perpendicular to line l.

Answer 1

$\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}} {\stackrel{slope}{\cfrac{3}{4}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{4}{3}}\qquad \stackrel{negative~reciprocal}{-\cfrac{4}{3}}}$