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Math Help - collinear points

  1. #16
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    Quote Originally Posted by danny arrigo View Post
    How did you arrive at that answer?
    Quote Originally Posted by Plato View Post
    The points are distinct and collinear for a=3: \;\;(3,1),~(1,3),~(2,2).
    that makes things simpler. we now see that its not -no point- now.............so how do we now prove that there are infinitely many of them?
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  2. #17
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    Quote Originally Posted by adhyeta View Post
    that makes things simpler. we now see that its not -no point- now.............so how do we now prove that there are infinitely many of them?
    oh! i think it will now be true of all a /geq 3, right??? sorry for the later. its a greater than equal to three.....for all integral values of a....
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  3. #18
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    Quote Originally Posted by adhyeta View Post
    so how do we now prove that there are infinitely many of them?
    We don't, can't be done!
    There is only one solution: a=3.
    From other postings you have done, it seems that your textbook has many wrong answers in it.
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  4. #19
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    yes. maybe.
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