12. The points with coordinate (5,3), (5,6) and (5,-4) lie on a line is​

Question

12. The points with coordinate (5,3), (5,6) and
(5,-4) lie on a line is​

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Audrey 2 months 2021-12-03T07:37:13+00:00 1 Answer 0 views 0

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    2021-12-03T07:38:37+00:00

    Answer:

    For the points to be collinear, i.e.,to lie in a line, area of triangle should be 0.

     \frac{1}{2} (5(6 + 4) + 5( - 4 - 3) + 5(3 - 6)) = 0 \\  \frac{1}{2} (5(10) + 5( - 7) + 5( - 3) )= 0 \\  \frac{1}{2} (50 - 35 - 15) = 0 \\  \frac{1}{2} (0) = 0 \\ 0 = 0

    Hence these coordinates are collinear...

    itzDopeGirl ❤️

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