Question

Plot the following points and check whether they are collinear or not (2,3),(3,2),(1,-5)

Answer 1

therefore it's not colliner.
Just go through the attachment

Answer 2

$slop \: of \: AB = ( \frac{2 - 3}{3 - 2} )$

$= ( \frac{ - 1}{1} ) = - 1$

$slop \: of \: BC \: = ( \frac{ - 5 - 2}{1 - 3} )$

$= ( \frac{ - 7}{ - 2} ) = \frac{7}{2}$

$as \: slop \: is \: not \: equal \: hence \\ given \: points \: are \: not \: \\ collinear$