Can somebody please help me with this question?

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212