Identify the end behavior of the polynomial function x 2x 9 Hint It may help to graph the polynomial function with your calculator first As x decreases the function f x increases As x increases the function f x increases As x decreases the function f x increases As x increases the function f x decreases As x decreases the function f x decreases As x increases the function f x increases As x decreases the function f x decreases As x increases the function f x decreases