JEE Main & Advanced Mathematics Straight Line Question Bank Slope of line, Equation of line in different forms

  • question_answer
    Two points (a, 0) and (0, b) are joined by a straight line, Another point on this line is                                                [Orissa JEE 2005]

    A)            \[(3a,-2b)\]                               

    B)            \[({{a}^{2}},ab)\]

    C)            \[(-3a,\,2b)\]                             

    D)            \[(a,\,b)\]

    Correct Answer: A

    Solution :

               Equation of the required line is, \[\frac{x}{a}+\frac{y}{b}=1\].                    From option (a), only point \[(3a,-2b)\] lies on it.


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