JEE Main & Advanced AIEEE Paper (Held On 11 May 2011)

  • question_answer
    lf A(2,-3) and B(-2,1) are two vertices of a triangle and third vertex moves on the line \[2x+3y=9,\] then the locus of the centroid of the triangle is :     AIEEE  Solved  Paper (Held On 11 May  2011)

    A) \[xy=1\]         

    B) \[2x+3y=1\]       

    C)  \[2x+3y=3\]

    D) \[2x3y=1\]

    Correct Answer: B

    Solution :

                                  \[\alpha =3h\] \[\beta -2=3k\] third vertex on the line \[2x+3y=9\] \[2\alpha +3\beta =9\] \[2(3h)+3(3k+2)=9\] \[2h+3k=1\] \[2x+3y-1=0\]

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