Maximum is the highest a graph can reach. In this case the graph continues forever therefore the maximum is:
infinity or ∞
The minimum is the lowest place the graph reaches. In this case it would be:
-6
The zeros are where the graph intersects the x axis. In this case it would have two zeros, which are:
(-3, 0) and (0.5, 0)
Hope this helped!
~Just a girl in love with Shawn Mendes