Determine Whether the Set of Ordered Pairs $\{ ( 0 , - 1 ) , ( 8,8 ) , ( 1 , - 8 ) , ( 9,0 ) , ( 1,1 ) \}$

Multiple Choice

Determine whether the set of ordered pairs $\{ ( 0 , - 1 ) , ( 8,8 ) , ( 1 , - 8 ) , ( 9,0 ) , ( 1,1 ) \}$ represents a function from A to B , where $A = \{ 0,1,8,9 \}$ and $B = \{ - 8 , - 1,0,1,8 \}$

A) a function from A to B
B) not a function from A to B