As a data analyst, you are visually inspecting a graph of projected company costs to determine if the financial model represents a one-to-one function. Based on your knowledge of the horizontal line test, what specific condition must the graph meet?

A supply chain manager is reviewing a graph that maps delivery volumes to total costs. To verify if the relationship is a one-to-one function, the manager applies the ____ line test.

A logistics manager is reviewing a graph that maps 'Shipping Weight' to 'Total Delivery Cost'. To ensure that every possible cost corresponds to exactly one unique weight (a one-to-one relationship), the manager applies the horizontal line test. Arrange the steps of the horizontal line test in the correct order to perform this verification.

Requirement for the Horizontal Line Test

A business analyst is reviewing a revenue graph to determine if the financial model represents a one-to-one function. According to the horizontal line test, if every horizontal line intersects the graph of the function at most one point, then the function is a one-to-one function.