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How can mapping diagram the domain and the range of a relation

How can mapping diagram the domain and the range of a relation
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How can mapping diagram the domain and the range of a relation

User Johannes Fahrenkrug
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1-3 : They're using the mapping diagram right? When a domain-value or x is used twice, that means it CANNOT be a function because the domain values CANNOT repeat. On a mapping diagram, only one arrow can come from each domain-value
User Daniel Van Heerden
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