Is every relation also a function? Explain

It takes a total of 6 hours to fill up an inground backyard pool using a standard house. a function can represent this situation to represent the amount of water in the pool until it is full a function of time the hose is running. determine the domain for the function

Is the point (0, 8) on the x-axis or y-axis? how do you know?

Rationalize the denominator- 12x/√x-10