Umm, I think it is the first one.
<h2>
Explanation:</h2><h2>
</h2>
Here you haven't provided any function, so I'll assume this one:

This is a quadratic function whose graph represents a parabola. Any parabola has its vertex at the point:

Therefore:

Therefore, the vertex is:

Answer:
1. <
2. <
Step-by-step explanation:
Have a good day :)
The answer is a because i said so.