2 The graph is not drawn according to scale and represents the functions of f and g where 2 f x x 2x 4 g x x 1 DM Ly axis and AB Lx axis 4 y DM Ho A 4 k 22 2 Calculate the coordinates of D if OM 12 22 3 1 Write down the value of k 22 3 2 Determine the length of AB 22 4 1 B 2 22 1 Write x 2x 4 in the form y x p q and write down the coordinates of Q the turning point of f If A were any point x y on f and B on g such that AB 1 x axis determine in terms of x an expression for the vertical length AB 22 4 2 Hence calculate the minimum length of AB g X 4 4 1 2 2 1