# If my tangent line at point (4,8) has the equation #y=5x/6 - 9#, what is the equation of the normal line at the same point?

##### 1 Answer

Oct 11, 2014

The normal line is the line that is perpendicular to the the tangent line.

If the slope of a line is

The given equation is

The point

The equation of the normal line is