The quadrilateral formed by the pair of lines `xy+x+y+1=0`,`xy+3x+3y+9=0` is

Joint equation of the diagonals of the square formed by the pairs of lines xy+4x-3y-12=0 and xy-3x+4y-12=0 , is

The equation of the diagonal of the square formed by the pairs of lines xy +4x - 3y - 12 = 0 and xy - 3x +4 y - 12 = 0 is

The line 3x + 2y = 6 will divide the quadrilateral formed y the lines x + y = 5, y – 2x = 8, 3y + 2x = 0 & 4y – x = 0 in

The equation of the diagonal through origin of the quadrilateral formed by the lines x=0,y=0,x+y-1=0 and 6x+y-3=0, is

Orthocentre of the triangle formed by the pair of lines xy=0 and the lines 2x+3y+4=0 is

If the area of the triangle formed by the pair of lines 8x^(2)-6xy+y^(2)=0 and the line 2x+3y=a is 7 then a=

The orthocentre of the triangle formed by the pair of lines 2x^(2)-xy-y^(2)+x+2y-1=0 and the line x+y+1=0 , is

Area of the triangle formed by the lines y^2-9xy+18x^2=0 and y=9 is