Q. Look at this set of ordered pairs:(2,3)(5,18)(9,16)(15,12)Is this relation a function?Choices:(A) yes(B) no
Understand function definition: Step 1: Understand the definition of a function. A relation is a function if each input (x-value) has exactly one output (y-value).
Check for duplicates: Step 2: Check the x-values in the ordered pairs for duplicates. The pairs are (2,3), (5,18), (9,16), and (15,12).
List x-values: Step 3: List the x-values: 2,5,9,15. Since there are no repeated x-values, each x-value is paired with exactly one y-value.