Suppose that f x x 3x a List the x values of all critical points of f x 3 Use interval notation to indicate where f x is increasing A function is increasing if larger x values give larger y values Don t include points where the function changes from increasing to decreasing or from decreasing to increasing Increasing for a in C Use interval notation to indicate where f x is decreasing A function is decreasing if larger x values give smaller y values Don t include points where the function changes from increasing to decreasing or from decreasing to increasing Decreasing for a in D List the x values of all local maxima of f x values of local maxima E List the x values of all local minima of f x x values of local minima F Use interval notation to indicate where f x is concave up Concave up for a in G Use interval notation to indicate where f x is concave down Concave down for a in H List the revalues of all the inflection points of f