Question

$anwer \: with \: explaination \: required$
Is the point (1 ,-1) ,(5 , 2)and (9 , 5) are collinear?
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Answer 1

Answer:

Let A(1,-1), B(5,2) and (9,5) be the given points. Then,we have

AB=

(5−1)

2

+(2+1)

2

=

16+9

=5

BC=

(5−9)

2

+(2−5)

2

=

16+9

=5

and, AC=

(1−9)

2

+(−1−5)

2

=

64+36

=10

Clearly, AC=AB+BC

Hence, A,B,C are collinear points.

Step-by-step explanation:

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Answer 2

Answer:

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