Directions Use the function f x below to answer the following questions Part 1 Intervals Find the open interval s on which f is increasing decreasing 1 Increasing 2 Decreasing f x 7x 4 Answer Formats If necessary use INF and INF to denote and o If the function is not increasing decreasing for any interval enter NONE If there is more than one interval type your answer as a comma separated list For example a b c d Part 2 Relative Extremum Find the x values s where f has a relative maximum relative minimum