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haleyking345

  • one year ago

Collinear points lie on the same line. Find the value of k for which the points (15,1), (-3,-8), and (3,k) are collinear. I don't understand this. Can someone please help?

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  1. Harkirat
    • one year ago
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    It this a coordinate geometry problem???

  2. haleyking345
    • one year ago
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    if analytic geometry has to do with it than yes.

  3. Harkirat
    • one year ago
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    okay you could proceed as follows (refer the diagram)|dw:1365367371961:dw|

  4. Harkirat
    • one year ago
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    If they are collinear they will all lie on the same line then AB = AC+CB use the Distance Formula to calculate AB, AC and CB Substitute and solve for k

  5. haleyking345
    • one year ago
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    oh ok, that makes sense. I can do it now. Thank you so much!!!

  6. Harkirat
    • one year ago
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    u r welcome.......☺

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