The equation to the pair of straight lines passing through `(2, 1)` and perpendicular to the pair of lines `4xy+2x+6y+3=0` is

The equation to the pair of st lines passing through (1, 2) and perpendicular to the pair of lines x^(2)-y^(2)=0 is

The equation of the pair of lines through the point (2,1) and perpendicular to the pair of lines 4xy + 2x + 6y + 3 = 0 is

Equation of pair of straight lines drawn through (1, 1) and perpendicular to the pair of lines 3x^(2)-7xy+2y^(2)=0 , is

Equation of pair of straight lines drawn through (1, 1) and perpendicular to the pair of lines 3x^(2)-7xy+2y^(2)=0 , is

Equation of pair of straight lines drawn through (1, 1) and perpendicular to the pair of lines 3x^(2)-7xy+2y^(2)=0 , is

The equation of the pair of lines through (1,-1) and perpendicular to the pair of lines x^2-xy-2y^2=0 is

The equation on the pair of straight lines through the point (1, 1) and perpendicular to the pair of straight lines 3x^(2) - 8xy + 5y^(2) = 0 is