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Look at this set of ordered pairs:\newline(12,5)(12, 5)\newline(20,−13)(20, -13)\newline(12,−1)(12, -1)\newlineIs this relation a function?\newlineChoices:\newline(A) yes\newline(B) no

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Full solution

Q. Look at this set of ordered pairs:\newline(12,5)(12, 5)\newline(20,−13)(20, -13)\newline(12,−1)(12, -1)\newlineIs this relation a function?\newlineChoices:\newline(A) yes\newline(B) no
  1. Check xx-values: Check xx-values in the ordered pairs: (12,5)(12, 5), (20,–13)(20, –13), (12,–1)(12, –1).\newlinexx-values: 1212, 2020, 1212.
  2. Identify repeating xx-value: Do xx-values repeat? Yes, the xx-value 1212 repeats.
  3. Determine if relation is function: Since the xx-value 1212 repeats with different yy-values, the relation is not a function.

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