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Determine if the point (1,5),(2,3)and (-2,-11) …

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Determine if the point (1,5),(2,3)and (-2,-11) are collinear.

Posted by Gautam Bhatia 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 3 months ago

Using the Distance Formula ,
1st and 2nd distance ,
=>
=>
=>
2nd and 3rd ,
=>
=>
=>
1st and 3rd point .
=>
=>
=>
so ,
Ist and 2nd + 2nd and 3rd = 1st and 3rd is law of collinearity ,
Lets check ,
5+ 212 = 256
217 not equal 256
Hence ,
It does not satisfy the condition , Hence they are not collinear .

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