Otherwise, for #1, You seem to have most or all the equation correctly y = ax^2 +36 and you know. Vertex is (0,36) a < 0. You can identify a possible integer point ordered pair from the graph. Maybe, (4,20).
ax^2 = y -36
------ > y = -x^2+36
Equation for the rainbow parabola, which is equivalent to what you found.
I hope my answer has come to your help. God bless and have a nice day ahead!