Need help again asap

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.

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.