Question

Using distance formula, examine whether the following sets of points are collinear?
(3, 5), (1, 1), (- 2, - 5)

Answer 1

Answer:

this question can be done through the distance formula which is under root of X2 - x 1 whole square + y 2 - y1 whole square

AB=2√5

BC=3√5

AC=5√5

hear a b + BC is equal to AC

therefore a, b, c are collinear