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[" 7.If from point "P(4,4)" perpendicula...

[" 7.If from point "P(4,4)" perpendiculars to the strughe lines "],[3x+4y+5=0" and "y=mx+7" meet at "Q" and "R" arca of "],[" trangle "PQR" is maximum,then "m" is cqual to: "],[[" (1) "(4)/(3)," (B) "-(4)/(3)],[" iC "-1," (D) "^(2)1]]

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