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[" "families of lines are as follows: "],[2x+3y+1+k_(1)(2x+4y+4)=0],[(3+6tan theta)x+(4+4tan theta)y+4+4+tan theta=0],[0(x+y+lambda)+lambda_(3)(2x+y+1)=0],[" d the value of "lambda" so that "3" fanilics have a "c" ."],[[(13)/(11)," (B) "(21)/(19)," (B) "]]

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