Plz help thank you

the problem is in the picture.​

What is the difference between the points (4, 7) and (4, -5)? a. 0 units b. 2 units c. 4 units d. 12 units

Based on the graph, what is the initial value of the linear relationship? a coordinate plane is shown. a line passes through the y-axis at -2 and the x-axis at 3.

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