Question

Determine whether the graph of the pair of equations is parallel, perpendicular, or neither.
y=--1/3x+2
y=3x-5
Select one:
a. parallel
b. perpendicular
c. neither

Answer 1

$y=mx+b$
$m_1=-\frac{1}{3}$
$m_2=3$
$m_1=\frac{-1}{m_2}=\frac{-1}{3}$
Therefore the lines are perpendicular.