Question

Which set of ordered pairs does not represents a function?

Answer 1

Answer:

The first set of ordered pairs is a function, because no two ordered pairs have the same first coordinates with different second coordinates. The second example is not a function, because it contains the ordered pairs (1,2) and (1,5). These have the same first coordinate and different second coordinates.

Answer 2

Answer:

The first option.

Step-by-step explanation:

You cannot repeat the x value if it is a function. The x value of 2 is repeated in the first option.