Determine whether the lines are parallel, perpendicular, or neither.
L1: y = $\frac { 9 } { 2 }$ x - 9
L2: y = - $\frac { 2 } { 9 }$ x - 2

A)Perpendicular
B)Neither
C)Parallel

Question

Determine whether the lines are parallel, perpendicular, or neither.  
L1: y = $\frac { 9 } { 2 }$ x - 9
L2: y = - $\frac { 2 } { 9 }$ x - 2
 
A)Perpendicular
B)Neither
C)Parallel

Quizplus · Accepted Answer

The slopes of L1 and L2 are $\frac{9}{2}$ and $-\frac{2}{9}$, respectively. Since the product of the slopes is -1 ($\frac{9}{2} * -\frac{2}{9} = -1$), the lines are perpendicular.

Determine Whether the Lines Are Parallel, Perpendicular, or Neither 92\frac { 9 } { 2 }29​

Determine Whether the Lines Are Parallel, Perpendicular, or Neither $\frac { 9 } { 2 }$