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Look at this set of ordered pairs:\newline(20,−13)(20, -13)\newline(4,1)(4, 1)\newline(−3,6)(-3, 6)\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(20,−13)(20, -13)\newline(4,1)(4, 1)\newline(−3,6)(-3, 6)\newlineIs this relation a function?\newlineChoices:\newline(A) yes\newline(B) no
  1. Check xx-values: Check xx-values: (20,−13),(4,1),(−3,6)(20, -13), (4, 1), (-3, 6)\newlinexx-values: 20,4,−320, 4, -3
  2. Check for repetition: Do xx-values repeat? No, all xx-values are unique.
  3. Determine if function: Since no xx-value is repeated, the relation is a function.

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