We want to see which one of the given sets of ordered pairs does not represent a function.
The option that does not represent a function is A.
A function is a relationship that maps elements from one set (the domain) into elements from another set (the range).
Such that each element from the domain can be mapped into only one element from the range.
Also remember that in the point notation, (x, y).
x belongs to the domain and is being mapped into y, which belongs to the range.
So if we have a set where a given input has two different outputs, that set does not represent a function.
Here we can see that in option A we have the points:
(3, 1) and (3, -1)
So the input 3 is being mapped into two different values from the range, then this set can't represent a function.
The correct option is A.
If you want to learn more, you can read:
https://brainly.com/question/21184710
