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Look at this set of ordered pairs:\newline(10,9)(10, 9)\newline(−9,11)(-9, 11)\newline(14,0)(14, 0)\newline(−15,16)(-15, 16)\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(10,9)(10, 9)\newline(−9,11)(-9, 11)\newline(14,0)(14, 0)\newline(−15,16)(-15, 16)\newlineIs this relation a function?\newlineChoices:\newline(A) yes\newline(B) no
  1. Check xx-values: Check xx-values: (10,9)(10, 9), (−9,11)(-9, 11), (14,0)(14, 0), (−15,16)(-15, 16)\newlinexx-values: 1010, −9-9, 1414, xx00
  2. Do xx-values repeat: Do xx-values repeat? No, all xx-values are unique.
  3. Relation is a function: Since no xx-value is repeated, the relation is a function.

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