If `9x^(2)-24xy+ky^(2)-12x+16y-12=0` represents a pair of parallel lines then k=

If 16x^(2)+24xy+9y^(2)+kx-12y-21=0 represents a pair of parallel lines then distance between them is

Values of k so that equation 16x^(2)+24xy+ky^(2)+7x-12y-21=0 represents a pair of parallel lines is

9x^(2)+24xy+16y^(2)

If 12x^(2)+7xy+by^(2)+gx+7y-1=0 represents a pair of perpendicular lines then

If 2x^(2)+xy-3y^(2)+4x+ky-6=0 represents a pair of lines then k=

If lambdax^(2)-10xy+12y^(2)+5x-16y-3=0 , represents a pair of straight lines, then the value of lambda is

If lambda x^(2)+6xy+9y^(2)+4x+12y+3=0 represents a pair of straight lines then lambda

6x^(2)+hxy+12y^(2)=0 represents pair of parallel straight lines, if h is

The equation 12x^(2)+7xy+ay^(2)+13x-y+3=0 represents a pair of perpendicular lines. Then, the value of a is