What is an equation for the points (0,-3) and (0,3) with the vertex (0,-9)?

What are the coordinates of the hole in the graph of the function f(x) ? f(x)=x2−9x−3 enter your answer in the boxes.

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?