1.

A line AB of length '2l' moves with the end 'A' always on x - axis and the end 'B' on the line y = 6x find the equation of locus of middle point of AB

Answer»

`9X^(2)+10Y^(2)-6xy-9l^(2)=0`
`9x^(2)-10y^(2)+6xy+9l^(2)=0`
`9x^(2)+10y^(2)+6xy+9l^(2)=0`
`9x^(2)-10y^(2)-4xy+6l^(2)=0`

ANSWER :A


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