Question 1182384

here's a reference for the definiition of a function.


<a href = "https://www.purplemath.com/modules/fcns.htm" target = "_blank">https://www.purplemath.com/modules/fcns.htm</a>


the definition is that, for each and every value of x, there can be one and only one value of y.


if you have more than one value of y for any value of x, then the relation is not a function.


the point pairs in this problem can be graphed as shown below:


with these point pairs, it is clear that any value of x in the set points to one and only one value of y, therefore the relation is a function.