Final answer:
To determine whether a set of ordered pairs represents a function or not, we need to check for repeated x-values.
Step-by-step explanation:
In order to determine whether a set of ordered pairs represents a function or not, we need to check if any x-values are repeated. If there are any repeated x-values, then the set does not represent a function. Let's examine each option:
A) (2, 3) and (-5, 2): Both x-values are different, so this set could represent a function.
B) (6, -5) and (6, 5): The x-value 6 is repeated, so this set does not represent a function.
C) (0, 3) and (-1, 0): Both x-values are different, so this set could represent a function.
D) (-5, 2) and (2, 2): Both x-values are different, so this set could represent a function.
Therefore, the set that does not represent a function is B) (6, -5) and (6, 5).