" Two lines "9x^(2)+y^(2)+6xy-4=0" are "

Two lines 9x^(2)+y^(2)+6xy4=0 are

The pair of lines 9x^(2)+y^(2)+6xy-9=0 are

Lines represented by 9x^(2)+y^(2)+6xy-4=0 are

Lines represented by 9x^(2)+y^(2)+6xy-4=0 are

The figure formed by the pairs of lines 6x^(2) + 13xy + 6y^(2) = 0 and 6x^(2) + 13xy +6y^(2)+ 10x + 10y + 4 = 0 is a

Distance between two lines represented by the pair of straight lines 9x^(2)-24xy+16y^(2)+3x-4y-6=0 is

Distance between the pari of straight lines x^(2)+6xy+9y^(2)+4x+12y-5=0 is given by

Distance between the pari of straight lines x^(2)+6xy+9y^(2)+4x+12y-5=0 is given by

If the two pair of lines 2x^(2)+6xy+y^(2)=0 and 4x^(2)+18xy+by^(2)=0 are equally inclined to each other then b=