Question

Identify the quadratic function that forms the graph of the parabola below:
(Points : 1)
y = -x2 + 9
y = x2 – 9
y = x2 + 9
y = -x2 – 9x

Answer 1

You can eliminate two right off the bat. A negative coefficient on a quadratic gives an "upside down" parabola.

Answer 2

......lost