Final answer:
A relation is not a function if an input corresponds to more than one output. Options B and D both show the same input with different outputs, which means they are not functions.
Step-by-step explanation:
The question provided represents a mathematics problem, specifically asking which of the sets of ordered pairs is not a function. By definition, a function is a relation in which each input has exactly one output. If any input value corresponds to more than one output value, then the relation is not a function.
Looking at the provided options, the pairs in option B and D both show the same input with different outputs:
- B. ( x -9-6-2 4 ) ( y ) 26 24 32 26
- D. ( x ) ( -9-6-9 ) ( y ) 26 24 32 26
Since the inputs -9 and -6 in option B correspond to both 26 and 24 as outputs, and similarly, the input -9 in option D corresponds to 26 and 32 as outputs, these options represent relations that are not functions.