Robin Hood fooled King John when he gave

him 3/6 of the coins. You could say that he

Input the fraction 1/2 (x) and his output was

3/6 (y). The function that caused that output

was multiplying both the numerator and the

denominator by 3.

Step-by-step explanation:

This is a common knowledge of equivalent fractions.

Multiplying both the numerator and denominator of a fraction by the same quantity does not change the value of the fraction.

Not only multiplication, but division also works. What ever operation performed on the numerator must also be performed on the denominator.

1/2 = 2/4 = 4/8 = 16/32