During a logistics training session, you are reviewing a routing log that maps delivery driver IDs ($x$) to their assigned loading zones ($y$). The log is represented by the following set of ordered pairs: $\{(101, 4), (102, 5), (103, 4), (104, 6)\}$. Recalling the criteria for functions, which of the following statements correctly classifies this set?

In a corporate directory, a log tracks the assignment of Employee IDs ($x$) to Workspace IDs ($y$). If the current assignments are represented by the set $\{(101, 22), (102, 25), (103, 22)\}$, the relationship is a function, but it is NOT a(n) ____ function because the Workspace ID 22 is assigned to two different employees.

A logistics coordinator is auditing a database that maps Driver IDs ($x$) to Vehicle Numbers ($y$). The audit reveals the following set of ordered pairs: $\{(101, 20), (102, 21), (103, 20)\}$. This mapping represents a one-to-one function.

An operations coordinator is auditing three different data logs to ensure they are recorded correctly. Match each set of ordered pairs $(x, y)$—representing Driver IDs and their assignments—with the correct mathematical classification of its relationship.

IT Asset Inventory Audit

IT Workstation Assignment Audit

As an HR systems analyst, you are auditing a digital log that pairs Employee IDs ($x$) with their assigned Secure Lockers ($y$) as a set of ordered pairs. Recalling the standard mathematical procedure, arrange the following steps in the correct order to determine if this log represents a one-to-one function.