Question

determine whether the points are collinear
P(-2,3)
Q(1,2)
R(4,1)

std 10 geometry
please answer me
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Answer 1

Answer:

i dont have pen and paper right now but im tellin method of solving it

if slope of pq = slope of qr then they are collinear

or

area of ∆ =0

or

pq+qr=pr(apply distance formula)

Answer 2

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$\tt\star\ Slope\:of \: PQ \: = \frac{2-3}{1-(-2)}$

$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:⟹\frac{-1}{3}$

$\tt\star\ Slope\:of \: QR \: = \frac{1-2}{4-1}$

$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:⟹\frac{-1}{3}$

Since the slope are equal

Point are equal....

hope it will help you

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