For the following graph : 2 ) Determine the intervals between which the rate of change is positive and negative . ( 2 marks ) b ) State where...

I need help with a, b, and c. Plz explain with detail

6 . For the following graph :"2 )Determine the intervals between which the rate of changeis positive and negative . ( 2 marks )b ) State where the rate of change is zero . ( 1 mark )C ) List the local maximums and minimums of the function .( 1 mark )