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draw diagram of each set of ordered pairs and determine if each set represents a one-to-one,one-to-many,many-to-one or many-to-many

a.(2,3),(3,2),(2,5)
b.(1,1),(2,2),(3,3),(4,4),(5,5)
c.(1,4),(2,4),(3,4),(4,4)
d.(1,a),(1,b),(1,c),(1,d)
e.(3,-2),(3,2),(4,-2),(5,2)​