Solve the problem.
-Find the slope of a line perpendicular to the line $y = - \frac { 4 } { 9 } x - 7$.
A) $- 7$
B) 7
C) $- \frac { 4 } { 9 }$
D) $\frac { 9 } { 4 }$

Question

Quizplus · Accepted Answer

The slope of a line perpendicular to another is the negative reciprocal of the original line's slope. The original slope is $-\frac{4}{9}$, so the perpendicular slope is $\frac{9}{4}$.

Solve the Problem y=−49x−7y = - \frac { 4 } { 9 } x - 7y=−94​x−7

Solve the Problem $y = - \frac { 4 } { 9 } x - 7$