Your boss would like your help on a marketing research project he is conducting on the relationship between the price of pop and the quantity of pop supplied. He hands you the following document:

Price of PopQuantity of Pop Supplied(Dollars per can) 0.50, 0.75,1.00,1.25(Billions of cans)750,1000,1500,2000

Your task is to take this ________and construct a graphical representation of the data. In doing so, you determine that as the price of pop rises, the quantity of pop supplied increases. This confirms the _______________.