In 2 2/3 months you ran 76 miles.
To know how many miles you ran each month, you can simply use cross multiplication as follows:
number of miles per month= (76) / (2 2/3)
= 28.5 miles
Yes the graph will show a proportional relationship
Equal to 1, and you'll just add a 4 and that will make it 4/4 and like both are the same numbers it will become 1 whole