The nature of straight lines represented by the equation `4x^(2)+12xy+9y^(2)=0` is

The straight lines represented by the equation 9x^(2)-12xy+4y^(2)=0 are

The straight lines represented by the equation 9x^(2)-12xy+4y^(2)=0 are

Two lines represented by equation x^(2)+xy+y^(2)=0 are

Two lines represented by equation x^(2)+xy+y^(2)=0 are

The equation 4x^(2)-12xy+9y^(2)=0 represents

The equation of the bisector of the angle between the lines represented by the equation 4x^(2)-16xy+7y^(2)=0 is?

The angles between the lines represented by the equation 4x^(2)-24xy+11y^(2)=0 are

The angles between the lines represented by the equation 4x^(2)-24xy+11y^(2)=0 are