Posted by Anonymous on .
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

Geometry 
drwls,
The slope must be 1/3, since it is perpendicular to a line with slope equal to 3.
The only line with that slope that goes through the origin is y = x/3