# Equations of perpendicular lines

• Nov 7th 2008, 07:08 AM
roxy6pink
Equations of perpendicular lines
I need help with this problem:

Determine the equation of the line that is perpendicular to y=4x-8 and that passes through the origin.
• Nov 7th 2008, 08:02 AM
Peritus
$
\begin{gathered}
m_{normal} = - \frac{1}
{4} \hfill \\
y = - \frac{1}
{4}x \hfill \\
\end{gathered}$