The pair of lines passing through the origin and parallel to the lines represented by the equation `2x^2-xy-6y^2+7x+21y-15=0`, is

Find the combined equation of the straight lines passing through the point (1,1) and parallel to the lines represented by the equation . x^2-5xy+4y^2+x+2y-2=0 .

Find the combined equation of the straight lines passing through the point (1,1) and parallel to the lines represented by the equation . x^2-5xy+4y^2+x+2y-2=0 .

Find the combined equation of the straight lines passing through the point (1,1) and parallel to the lines represented by the equation . x^2-5xy+4y^2+x+2y-2=0 .

Find the joint equation of the pair of lines which pass through the origin and are perpendicular to the lines represented the equation y^(2)+3xy-6x+5y-14=0

Find the joint equation of the pair of lines which pass through the origin and are perpendicular to the lines represented the equation y^2+3x y-6x+5y-14=0

Find the joint equation of the pair of lines which pass through the origin and are perpendicular to the lines represented the equation y^2+3x y-6x+5y-14=0

Find the joint equation of the pair of lines which pass through the origin and are perpendicular to the lines represented the equation y^2+3x y-6x+5y-14=0

Find the joint equation of the pair of lines which pass through the origin and are perpendicular to the lines represented the equation y^2+3x y-6x+5y-14=0