Question

Which of the following relations is a function?
A. {(1, 2), (5, 6), (3, 2), (6, 4)}

B. {(4, 3), (5, 2), (-3, -1), (4, -1)}

C. {(5, -2), (5, -3), (5, -4)}

D. {(1, 2), (0, 3), (1, 3), (0, 2)}

Answer 1

What one do you think?

Answer 2

maybe C

Answer 3

Yep

Answer 4

The input (x value) that in put in can not have the same output, which the out put is y. So if you see a set that has the same y values then it is not a function