Explain how to determine the maximum and minimum values of a function by examining its graph.

When you see the sign facing the "y" the line is the minimum value
when you see the sign not facing the"y" the lin is the maximum value

When ever you see the sign facing the "y" the line will be minimum value for the next one
whenever you see the sign not facing the "y" the line will be maximum value

i hoped i help :)

69 i think because is the only one square