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Look at this set of ordered pairs:\newline(12,20)(12, 20)\newline(1,2)(1, 2)\newline(10,−10)(10, -10)\newline(13,8)(13, 8)\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(12,20)(12, 20)\newline(1,2)(1, 2)\newline(10,−10)(10, -10)\newline(13,8)(13, 8)\newlineIs this relation a function?\newlineChoices:\newline(A) yes\newline(B) no
  1. Check for Repeated XX-values: Do any xx-values repeat?\newlineNo, all xx-values are unique.
  2. Confirm Function Representation: Since no xx-values repeat, each xx-value is paired with exactly one yy-value. This means the set of ordered pairs represents a function.

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What is the domain of this function?\newline(8,–1)(7,–11)(–4,10)(4,3)(8,–1)(7,–11)(–4,10)(4,3)\newlineChoices: \newline(A){–4,4,7,8}(A)\{–4,4,7,8\}\newline(B){–11,–1,3,10}(B)\{–11,–1,3,10\}\newline(C){3,4,7,8}(C)\{3,4,7,8\}\newline(D){–7,–4,4,8}(D)\{–7,–4,4,8\}
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