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Distance Formula

If the points...

Question

If the points (a,1), (1,-1) and (11,4) are collinear then the value of a is

A

-5

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B

6

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C

5

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D

4

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Solution

The correct option is C
5

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Q. For what value of

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Q. For what value of a the point (a, 1), (1, −1), and (11, 4) are collinear?

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