For an ordered pair to represent a function, there needs to be a unique value of 'y' for each value of x.
Let's check the options:
• {(-6,1), (7,2), (6,5),(-6, -1)}
-6 has two corresponding y values, 1 and -1.
This isn't a function.
• {(8,7), (-8,-4),(4,8),(-8,1)}
-8 has two corresponding y values, 1 and -4.
This isn't a function.
• {(-2,7), (-2,0), (0, -6),(-4,0)}
-2 has two corresponding y values, 0 and 7.
This isn't a function.
• {(-2,-4), (-7,1), (8,3), (3,3)}
There are unique values of y for each x.
This is a function.
The answer choice is right.
{(-2,-4), (-7,1), (8,3), (3,3)}