roblem 1 Let f x 3x x 2 Complete the following a Find the vertex of f x b Does f x have a maximum or a minimum Justify your answer c State the interval s where f x is increasing d State the interval s where f x is decreasing e Write f x in the form of f x a x h k f Sketch the graph of f x Label the vertex and two additional points on the graph yc include the x and y coordinates of all points and appropriately scale the axes to incl entire graph