Answer:
{(-2, -3), (-3, -2), (2,3), (3, 2)}
Step-by-step explanation:
A function is a set of ordered pairs in which <u>no two pairs have the same first number</u>.
In other words, an <em>x</em> cannot be paired with two <em>y</em>'s.
A function takes an <em>x</em> and pairs it with one and only one <em>y</em>.
{(0,0), (0, 2), (2.0), (2, 2)} is not a function because it pairs 0 with both 0 and 2.
{(2,-1), (2, 1), (3,-1), (3, 1)} is not a function because it pairs 2 with both -1 and 1.
{(2, 2), (2, 3), (3, 2), (3, 3)} is not a function because it pairs 2 with both 2 and 3.
on your sides 
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