Find p and q, if the following equation represents a pair of perpendicular lines `6x^(2)+5xy-py^(2)+7x+qy-5=0`.

Find p and q, if the following equation represent a pair of lines perpendicular to each other : (1) px^(2) - 8xy + 3y^(2) + 14x + 2y + q = 5 (2) 12x^(2) + 7xy - py^(2) + 18x + qy + 6 = 0.

Which of the following equations represent pair of lines ? 10x^2 - xy - 6y^2 - x + 5y - 1 = 0

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

Find p and q, if the equation px^(2) - 6xy + y^(2) + 18x - qy + 8 = 0 represents a pair of parallel lines.

If the equation x^(2)+py^(2)+qy-a^(2)=0 represents a pair of parallel lines, then

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