But the 2 slopes may not have a common point. If that is not so, they are jus referring to 2 parallel lines and not 3 collinear points.
-Vijay
On 12/1/05, forest <[EMAIL PROTECTED]> wrote:
You can do without matrix, sort ALL slopes and then find 2 adjacent
equal, as sorting n^2 is O(n^2 log (n^2)) = O(2n^2 log n) = O(n^2 log n)
