Question

Say whether the following points arr collinear or not.

A ( 1, -3 ), B ( 2,-5 ), ( -4,7 )

Answer 1

Hi , Friend !!!

here is your answer !!


A ( 1,-3 )
B (2,-5 )
C ( -4,7 )

if they lie on the same line they will be collinear


for this we have to find slope


given by

y2-y1 / x2 -x1
=> -5 -( -3 ) / 2-1

=> -2
m1= -2

slope = -2

now , again from B and C

y2-y1 / x2 -x1

=> 7-(-5 ) / -4-2

12 / -6

=> -2

m2= -2


slope = -2


hence , m1 = m2 = -2

hence , we called these points to be collinear


hope it help you !!

thanks !!

$ranjan$

Answer 2

these all three points that is A, B and C are collinear

because distance between AB=BC=AC