Test Mode
Reading Mode
Right = 0
Wrong = 0
x - y + 1 = 0, x + y + 1 = 0
x - y + 1 = 0, x + y + 7 = 0
2x + 3y = 0, 3x + 2y = 0
2x - y + 2 = 0, 4x + 3y + 1 = 0
3x -4y = 1, x + 2y = 7