Relation 3
\[
\{(c, t),(f, n),(f, c),(c, f)\}
\]

Function
Not a function

Answer

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Answer

The given relation is not a function

Steps

Step 1 ：Check if each input is associated with exactly one output

Step 2 ：Given relation: \(\{(c, t),(f, n),(f, c),(c, f)\}\)

Step 3 ：Input 'c' is associated with both 't' and 'f'

Step 4 ：Input 'f' is associated with both 'n' and 'c'

Step 5 ：The given relation is not a function