What is -2x-8? i need some work to go with it if you don’t mind

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.

X² + 4y² = 36 the major axis runs along: a) y=4x b) x-axis c) y-axis