This is because it is on the -1 on the x axis and when the points hit exactly on the corners you go up 3 over 1. Which as a fraction looks like 3/1 which is equal to 3
I have a lead pencil and only 2 pieces of lead left. One is 5/6 inches long and the other is 1/3 inches long. How many times longer is the 5/6 then the 1/3?