Which relation is a function?

{ (9, - 1), (-1, 9), (9, 2), (2, - 1) }

{ (5, - 7), (4, 6), (-3, 8), (5, 9) }

{ (8, - 4), (-4, 8), (-4, - 8), (-8, 4) }

{ (2, 3), (-2, 3), (3, 2), (-3, - 2) }

Question

1 August, 16:02

+4

Answers (1)

Know the Answer?

Kathy Moss · Answer 1

{ (2, 3), (-2, 3), (3, 2), (-3, - 2) }

Step-by-step explanation:

Functions can't have any repeating x-coordinates.

Which relation is a function?{ (9, - 1), (-1, 9), (9, 2), (2, - 1) }{ (5, - 7), (4, 6), (-3, 8), (5, 9) }{ (8, - 4), (-4, 8), (-4, - 8), (-8, 4) }{ (2, 3), (-2, 3), (3, 2), (-3, - 2) }