Prove that the lines `2x-3y+1=0, x+y=3, 2x-3y=2 and x=4-y` form a parallelogram.

Prove that the lines 2x-3y+1=0,\ x+y=3,\ 2x-3y=2\ a n d\ x+y=4 form a parallelogram.

Prove that the lines y=3x+1,y=4ndy=-3x+2 form an equilateral triangle.

The area of the parallelogram formed by the lines 2x-3y+a=0, 3x-2y-a=0, 2x-3y+3a=0 and 3x-2y-2a=0 in square units , is

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

Show that the straight lines : x-y-1=0 , 4x+3y=25 and 2x-3y+1=0 are concurrent.

The number of triangles that the four lines y = x + 3, y = 2x + 3, y = 3x + 2, and y + x = 3 form is (a) 4 (b) 2 (c) 3 (d) 1

The lines x+2y-5=0, 2x-3y+4=0,6x+4y-13=0

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

The lines x-y-2=0,x+y-4=0,x+3y=6 meet at the point