Question

The following set of ordered pairs is a function and is one-to-one. the set of ordered pairs{(1, 1), (1, -1), (2, 2), (2, -2), (2, -1)}

Answer 1

is this false because they use the same x coordinate more than once?

Answer 2

Yes!

Answer 3

If they use the same x-coordinate and the y-coordinates are different, it CAN'T be a function..unless all of them are the same x-coordinate.

Answer 4

Yay thank you :D