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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2002

  • question_answer
    Two points on the curve\[y={{x}^{2}}+2x\]with abscissae 1 and 3, slope of the line joining these two points

    A)  3                   

    B)  5

    C)  6                   

    D)  4

    Correct Answer: C

    Solution :

     Given \[y={{x}^{2}}+2x\] Putting \[x=1,\text{ }y=3\] Putting \[x=3,\text{ }y=15\] \[\therefore \]Points are (1,3) and (3,15) \[\therefore \]Slope of the line \[=\frac{15-3}{3-1}\] \[=\frac{12}{2}=6\]


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