Algebra-1

To determine which sets of domain and ranges represent a function, we need to ensure that each element in the domain (first element in each pair) corresponds to exactly one element in the range (second element in each pair).

Let's analyze each set:

A. For x=−18, we have two different y values: y=3 and y=5. Therefore, this set does not represent a function because x=−18 is not associated with a unique y.

B. Each x value is associated with a unique y value. This set represents a function because each x value has exactly one corresponding y value.