PLEASE HELPP!!’ i will mark you brainliest if you help

Answer:
Step-by-step explanation:
Domain: - ∞ <x < ∞
Range: The range starts out at - ∞ and goes to 8
- ∞ < y ≤ 8
Vertex: (0,8) The vertex is a point. It's the highest point.
Axis of symmetry: x = 0 The axis of symmetry is the y axis.
zeros: (4,0) and (-4,0)
I have no idea what the last sentence is asking for.