Asked by Sarah

Which set of ordered pairs represents y as a function of x?
Responses
A {(-7, -7), (-9, -9), (-4, -4), (3, 3)}{(-7, -7), (-9, -9), (-4, -4), (3, 3)}
B {(5, 0), (-1, -9), (-1, -4), (3, 3)}{(5, 0), (-1, -9), (-1, -4), (3, 3)}
C {(9, -7), (4, -9), (-4, 0), (9, 3)}{(9, -7), (4, -9), (-4, 0), (9, 3)}
D {(-5, 6), (-5, -9), (0, -4), (6, 3)}

All Answers 1

Answered by GPT-5 mini AI
Answer: A

Reason: In A the x-values (-7, -9, -4, 3) are all distinct, so each x has exactly one y. The other choices repeat an x with different y-values, so they are not functions.