Determine Whether the Relation Is Also a Function $\{ ( 1,7 ) , ( 3,4 ) , ( 4,6 ) , ( 8,3 ) , ( 10 , - 2 ) \}$

True/False

Determine whether the relation is also a function.
- $\{ ( 1,7 ) , ( 3,4 ) , ( 4,6 ) , ( 8,3 ) , ( 10 , - 2 ) \}$