Question

The lines are perpendicular if the slope of one line is 4/7 what is the slope of the other line

Answer 1

if two lines are perpendicular, it is true that:

`\begin{gathered} m1\cdot m2=-1 \\ Let\colon \\ m1=(4)/(7) \\ m2=other_{\text{ }}line \\ (4)/(7)\cdot m2=-1 \\ solve_{\text{ }}for_{\text{ }}m2 \\ m2=-1\cdot(7)/(4) \\ m2=-(7)/(4) \end{gathered}`