11231×12+117271-67473

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.