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Look at this set of ordered pairs:\newline(12,−9)(12, -9)\newline(19,8)(19, 8)\newline(12,15)(12, 15)\newlineIs this relation a function?\newlineChoices:\newline(A) yes\newline(B) no

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Q. Look at this set of ordered pairs:\newline(12,−9)(12, -9)\newline(19,8)(19, 8)\newline(12,15)(12, 15)\newlineIs this relation a function?\newlineChoices:\newline(A) yes\newline(B) no
  1. Check xx-values: Check xx-values in the ordered pairs: (12,−9)(12, -9), (19,8)(19, 8), (12,15)(12, 15).\newlinexx-values are 1212, 1919, 1212.
  2. See for repeats: See if any xx-value repeats.\newlineThe xx-value 1212 repeats.
  3. Determine function status: Determine if the relation is a function.\newlineA function must have only one yy-value for each xx-value.\newlineSince the xx-value 1212 has two different yy-values (–9–9 and 1515), it's not a function.

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