Find the values of p in (i) to (iv) and p and q in (v) for the following pair of equations

(i) 3x - y - 5 = 0 and 6x - 2y - p = 0, if the lines represented by these equations are parallel.

(ii) -x + py = 1 and px - y - 1 = 0, if the pair of equations has no solution.

(ii) -3x + 5y = 7 and 2px - 3y = 1, if the lines represented by these equations are intersecting at a unique point.

(iv) 2x +3y - 5 = 0 and px - 6y - 8 = 0, if the pair of equations has a unique solution.

(v) 2+3y =7 and 2px + py = 28 - qy, if the pair of equations has infinitely many solutions.