Question

Determine whether the points are colinear A(1,3) , B (2,-5) , c (-4,7)

Answer 1

if the points are colinear then
distance of AB = distance of BC
= (1+3/ 2) , (3-5/2) = (2-4/2) ,( -5 + 7 /2)
= 2 , -1 = -2, 1
since the distance of AB not equal to BC
so, ABC is not collinear.