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

  • question_answer
    The gradient of the line joining the points on the curve \[y={{x}^{2}}+2x\]whose abscissa are 1 and 3, is  [MP PET 1997]

    A)            6     

    B)            5

    C)            4     

    D)            3

    Correct Answer: A

    Solution :

               The points are (1, 3) and (3, 15).                    Hence gradient\[=\frac{12}{2}=6\].


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