Answer:
The slope of the line is 2.
Step-by-step explanation:
Slope of a line:
Suppose that we have two points. The slope of the line is given by the change in y divided by the change in x.
In this question:
Points (0,0) and (1,2)
Change in y: 2 - 0 = 2
Change in x: 1 - 0 = 1
Slope: 
The slope of the line is 2.
Look at the attached picture
Hope it will help you.
I believe the pressure is 9 pounds per square inch after 6 weeks
This makes no sence number 1 what?