Question

How to prove four dimensational points are collinear?

Answer 1

Steps for proving 4 points are collinear-

find the equation of line passing through two points by the formula

y- y1=(y2 -y1) ( x - x1 ) / x2 - x1

Where x1 , x2 and y2 ,y1 are given points.

If remaining third and fourth points satisfy the equation of line then 4 points are collinear.