Look at this set of ordered pairs: (18, 17) (9, 16) (1, 12) (16, 15) Is this relation a function? Choices: (A)yes (B)no

Understand Function Definition: Step 1: Understand what a function is in terms of ordered pairs. A relation is a function if each input (first number in each pair) has exactly one output (second number in each pair). List Inputs: Step 2: List all the first elements (inputs) of the ordered pairs to check for duplicates: Inputs: 18, 9, 1, 16. Check for Duplicates: Step 3: Check if any input appears more than once. If an input repeats, it must map to the same output each time to still be considered a function. - 18 maps to 17 - 9 maps to 16 - 1 maps to 12 - 16 maps to 15 No input is repeated, so there are no conflicts in mapping.

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Look at this set of ordered pairs: $\newline$ $(18, 17)$ $\newline$ $(9, 16)$ $\newline$ $(1, 12)$ $\newline$ $(16, 15)$ $\newline$ Is this relation a function? $\newline$ Choices: $\newline$ (A) yes $\newline$ (B) no

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Q. Look at this set of ordered pairs:

\newline

(18, 17)

\newline

(9, 16)

\newline

(1, 12)

\newline

(16, 15)

\newline

Is this relation a function?

\newline

Choices:

\newline

(A) yes

\newline

(B) no

Understand Function Definition: Step $1$ : Understand what a function is in terms of ordered pairs. A relation is a function if each input (first number in each pair) has exactly one output (second number in each pair).
List Inputs: Step $2$ : List all the first elements (inputs) of the ordered pairs to check for duplicates: $\newline$ Inputs: $18, 9, 1, 16$ .
Check for Duplicates: Step $3$ : Check if any input appears more than once. If an input repeats, it must map to the same output each time to still be considered a function. $\newline$ - $18$ maps to $17$ $\newline$ - $9$ maps to $16$ $\newline$ - $1$ maps to $12$ $\newline$ - $16$ maps to $15$ $\newline$ No input is repeated, so there are no conflicts in mapping.