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Do these points lie on a straight line? (2,1) (5,7) (11,18)?

0 votes

Do these points lie on a straight line? (2,1) (5,7) (11,18)?

Please explain, thank you.

collinear-points

asked Feb 11, 2015 in PRECALCULUS by anonymous

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1 Answer

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Step 1:

The points are and .

Condition collinearity of three points is .

Let the points be and .

Substitute the values in above condition.

and are not collinear.

No, these points do not lie on a straight line.

Solution:

No, the points and do not lie on a straight line.

answered Feb 16, 2015 by david Expert

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