If the lines `y = - 3x + 4, ay = x + 10 and 2y + bx + 9 = 0` represent three consecutive sides of a rectangle then ab =

The three lines 4x+4y=1, 8x-3y=2, y=0 are

Show that the lines x^(2) - 4xy + y^(2) = 0 and x + y = 10 contain the sides of an equilateral triangle.

Show that the lines 2x + 3y - 8 = 0 , x - 5y + 9 = 0 and 3x + 4y - 11 = 0 are concurrent.

The lines 3x-4y=9 and y=0 meet at :

The line 3x + 2y + 7 = 0 and 6x + 4y + 9 = 0 are "___________" to each other .

If the three distinct lines x + 2ay + a = 0 , x+ 3by + b = 0 and x + 4ay + a = 0 are concurrent , then the point (a,b) lies on a .

If the straight lines 3x+4y+2=0,2x-y+3=0 and 2x+ay-6=0 are concurrent,then a=

The lines x = ay -1 = z -2 and z = 3 y - 2 = bz-2, (ab ne 0) are coplanar, if

If the lines x-2 = ay-3=(2-z)/3 and bx+1 = y+4=z are mutually perpendicular, then