Thread: Writing an equation of a Perpendicular Line

Could someone please help me out with this problem?

The line L1 has the equation y=3x. The line L2 is perpendicular to L1 and passes through the point P(0,0). Write an equation of L2

Originally Posted by GLAMX

Could someone please help me out with this problem?

The line L1 has the equation y=3x. The line L2 is perpendicular to L1 and passes through the point P(0,0). Write an equation of L2

Perpendicular lines have slopes that are negative reciprocals of each other, except in the case of a horizontal and vertical line.

You can use point-slope or just recognize that any line through the origin has the form y=mx.