Determine whether the given lines are parallel, perpendicular, or neither.
-$$\begin{array} { l }
y = 9 x - 7 \
y = - \frac { 1 } { 9 } x + 5
\end{array}$$
A) Parallel
B) Perpendicular
C) Neither

Question

Determine whether the given lines are parallel, perpendicular, or neither.
-$$\begin{array} { l } 
y = 9 x - 7 \
y = - \frac { 1 } { 9 } x + 5
\end{array}$$
A) Parallel
B) Perpendicular
C) Neither

Quizplus · Accepted Answer

The slopes of the two lines are $9$ and $-\frac{1}{9}$ respectively. We can see that these slopes are negative reciprocals of each other, which means the lines are perpendicular.

Determine Whether the Given Lines Are Parallel, Perpendicular, or Neither y=9x−7y=−19x+5\begin{array} { l } y = 9 x - 7 \\y = - \frac { 1 } { 9 } x + 5\end{array}y=9x−7y=−91​x+5​

Determine Whether the Given Lines Are Parallel, Perpendicular, or Neither $\begin{array} { l } y = 9 x - 7 \\y = - \frac { 1 } { 9 } x + 5\end{array}$