Algebra-1

To determine which association represents 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 option:

A. Here, (−H,−R) and (−H,R) both have −H as the domain value, but different range values. This violates the rule that each x (domain) must map to a unique y (range). Therefore, this association does not represent a function.

B. Here, (Q,Q) and (Q,−H) both have Q as the domain value, but different range values. This also violates the rule that each x (domain) must map to a unique y (range...