The graphs of the functions can be transformed, obtaining related functions. Vertical and horizontal displacements: It is assumed that c is a positive constant, ie c> 0 and y = f (x) then y = f (x) + c moves the graph c units up. y = f (x + c) shifts the graph c units to the right. For this case : y = f (x) + 4 moves the graph 4 units up. y = f (x + 3) moves the graph 3 units to the right. See attached graph.