Question

verify that the points (1,5),(2,3) and (-2 -1) are collinear or not ,and prove it

Answer 1

A=(1,5) , B=(2,3)
So AB= square root over 2-1 + 3-5
=square root over -1
C=(-2-1)
So BC=square root over -2-2 + -1-3
= square root over -8
=2 root 2.
Therefore AB+BC= square root of -1-8
=square root over-9
=-3.
So in order to verify whether AB+BC=AC
AC =square root over -2-1+-1-5
=square root over-9
=-3.
THEREFORE IT PROVES THAT AB+BC=AC AND THE POINTS HAVE BECOME COLLINEAR TO EACH OTHER .Proved
HOPE YOU UNDERSTOOD MY ANSWER FRIEND ♥ PLEASE MARK ME BRAINLIEST!
IF YOU DIDN'T UNDERSTAND THEN COMMENT BELOW!