Please answer this correctly without making mistakes

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.

Describe how to translate the graph of y=/x to obtain the graph of y=/x+5