Which Sets of Ordered Pairs Are Functions $A = \{ ( 4,3 ) , ( 17,29 ) , ( 18,52 ) , ( 4,19 ) \}$

question 314

Multiple Choice

Which sets of ordered pairs are functions? $A = \{ ( 4,3 ) , ( 17,29 ) , ( 18,52 ) , ( 4,19 ) \}$ $B = \{ ( 19,4 ) , ( 52,18 ) , ( 29,17 ) , ( 3,4 ) \}$ $C = \{ 69,82,44,87 \}$

• A) \(A\) is not a function; \(B\) is a function; \(C\) is a function.
• B) \(A\) is not a function; \(B\) is a function; \(C\) is not a function.
• C) \(A\) is a function; \(B\) is not a function; \(C\) is not a function.
• D) \(A\) is a function; \(B\) is a function; \(C\) is not a function.
• E) \(A\) is not a function; \(B\) is not a function; \(C\) is not a function.

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