Which graph shows a set of ordered pairs that represents a function?

29 is x=.7

30 is y=3.375 or 3 and 3/8

0.61 has 2 decimal places, so we put the decimal digits of 0.61, 61 over 1 followed by the number of zeroes equal to the number of decimal places, 

2:     61/1 = 61/100.