Prove the equation

1. Mar 21, 2007

ArL

sry I wrote two threads. (Same thing inside) so delect this please.

Last edited: Mar 21, 2007
2. Mar 21, 2007

Integral

Staff Emeritus
Start with the 2 point formula to express the line between your 2 points. Now find the mid point, and use the point slope formula to express the line you need.