Final answer:
Without sufficient information or given ratios, it is impossible to accurately determine the missing ordered pair that represents an equivalent ratio.
Step-by-step explanation:
To determine which ordered pair is missing when given that the ordered pairs represent equivalent ratios, one must find a common relationship between the pairs provided. Based on the description, it seems like there is not enough information to accurately deduce the missing pair just from the instructions given. It's important to have either the graph or the other equivalent ratios to establish a pattern or relationship. Missing this crucial information, any attempt to identify the missing ordered pair would be based on incomplete data, and therefore, I am unable to answer the question on which ordered pair is missing.