Does the quadratic function have a maximum or minimum? Give the value

Answer:
Max is 4.
Step-by-step explanation:
Maximum means it has a highest point and what is the highest point.
Minimum means it has a lowest point and what is the lowest point.
It doesn't have a minimum because it keeps going down forever and ever.
It does have a maximum because it does stop at the top. The y-value that is stops at is 4 so the max is 4.