Question

Are these points a function or not a function, explain. (0, 5), (1, 6), (2, 5)

Medals will be rewarded! :p

Answer 1

In a function, each x-coordinate can only be used once.

Answer 2

I just answered this...

Answer 3

ya but you didn't explain very well

Answer 4

Then read this http://www.mathsisfun.com/sets/function.html

Answer 5

I'm not done. Keep reading.
Now look at the three points.
The first one has x-coordinate 0, the second point has x-coordinate 1, and the third point has x-coordinate 2.
Each number, 0, 1, and 2 is only used once, so it's a function.

Answer 6

Oh ok, so if the X coordinates have two of the same number then it in't a function, now I understand thank you so much

Answer 7

Correct. You're welcome.