Question

Determine whether the points are collinear.
$P(-2,3),B(1,2),C(4,1)$

Answer 1

Slope of PB $=\frac{2-3}{1-(-2)}$

$=\frac{-1}{3}$

Slope of BC $=\frac{1-2}{4-1}$

$=\frac{-1}{3}$

Since slope are Equal

Points are colliner.