Which Set of Ordered Pairs Represents a Function from P

question 15

Multiple Choice

Which set of ordered pairs represents a function from P to Q? P = {5,10,15,20} Q = {-1,1,3}

• A){(5,3), (15,1), (5,-1), (15,3)}
• B){(15,-1), (15,1), (15,3)}
• C){(5,-1), (10,1), (10,3), (15,1), (20,-1)}
• D){(15,1), (10,-1), (5,1), (10,3), (15,-1)}
• E){(5,-1), (10,1), (15,3), (20,-1)}