go to previous page   go to home page   go to next page


Slopes of Perpendicular Lines

You may recall this from past math classes:

If two lines are perpendicular, then the product of their slopes is -1.

This is another way to look at what goes on when you make a normal vector to a given 2D vector by swapping elements and negating one:


Are ( -1.5, 6)T and (2, 2)T orthogonal?