Which of the following pairs of linear equations are consistent/inconsistent? If consistent, obtain the solution graphically: (i) \(x + y = 5\) and \(2x - y = 10\) (ii) \(x - y = 8\) and \(3x - 3y = 16\) (iii) \(2x + y - 6 = 0\) and \(4x - 2y - 4 = 0\) (iv) \(2x - 2y - 2 = 0\) and \(4x - 4y - 5 = 0\)