If the equation `12x^(2)+7xy-py^(2)-18x+qy+6=0` represents a pair of perpendicular straight lines, then

If the equation 12x^(2)+7xy-py^(2)-18x+qy+6=0 represents a pair of perpendicular lines then

The equation 12x^(2)+7xy-12y^(2)-18x+y+6=0 represents

Prove that the equation 2x^(2)+3xy-2y^(2)-x+3y-1=0 represents a pair of perpendicular straight lines.

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

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

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

If the equation 12x^2 + 7xy - py^2 - 18x qy + 6 = 0 represent two perpendicular lines, then the value of p and q are :

If 2x^(2)+4xy-py^(2)+4x+qy+1=0 represents a pair of mutually perpendicular lines then

The equation x^(2)+k_(1)y^(2)+k_(2)xy=0 represents a pair of perpendicular lines if