What are the coordinates of the vertex of the graph is it maximum or minimum?

Answer 1

This is an example of why some questions go unanswered.
The missing information makes it impossible to answer the question.

Answer 2

1.b
2.d
3.d
4.a
5.b
6.d
7.a
8.d
9.c
10.c

Answer 3

he is incorrect dont trust him