If the equation `ax^3 + 3bx^2y + 3cxy^2 + dy^3 = 0` represents three coincident lines, then :

If the equation ax^(3)+3bx^(2)y+3cxy^(2)+dy^(3)=0 represents three coincident lines,then :

If the equation ax^3+3bx^2y+3cxy^2+dy^3=0 (a,b,c,d ne 0) represents three coincident lines then

If the equation px^(3)+3qx^(2)y+3rxy^(2)+sy^(3)=0 and (p,q,r,s!=0) represents three coincident lines,then

If the equation 3x^(2)+6xy+my^(2)=0 represents a pair of coincident straight lines, then (3m)/2 is equal to

If the equation K(x^(2)+y^(2))=(3x-y)^(2) represents a pair of coincident lines, then k=

If the equation x^(3)+ax^(2)y+bxy^(2)+y^(3)=0 represents three lines two of which are perpendicular then equation of third line is

The equation x^(3)+ax^(2)y+bxy^(2)+y^(3)=0 represents three straight lines, two of which are perpendicular, then the equation of the third line, is

The equation x^(3)+ax^(2)y+bxy^(2)+y^(3)=0 represents three straight lines, two of which are perpendicular, then the equation of the third line, is

For what value of 'k'. The pair of equations 3x + 4y + 2 = 0 and 9x + 12y + k = 0 represents coincident lines.