Question

determine whether the points are collinear .solve it by distance formula

Answer 1

PQ = √[ (3)^2 + (1)^2]
=√10

QR = [ (3)^2 + (1)^2 ]
=√10

PR = [ (6)^2+ (2)^2 ]
=2√10

here
PQ + QR = PR

also we can see that Q is mid point of P and R

hence they are collinear

Answer 2

hope it helps!

#sumedhian ❤❤