i am doing a project involving the Gateway Arch as a parabola. I need to do a series of questions most of which i can do but cant do without 4 questions that i have no idea how to do. for my coordinates i have (0,0) (315,630) (630,0). any help would be great since this isnt my strong topics. The questions i need help with are

Providing and equation that models my parabola

My x intercepts and what it means in the context of the situation

My y intercepts and what it means in the context of the situation

The practical domain/range