Question

I need help!
Which of the relations below is a function?

Choose:

{(2,3), (3,4), (5,1), (6,2), (2,4)}
{(2,3), (3,4), (5,1), (6,2), (7,3)}
{(2,3), (3,4), (5,1), (6,2), (3,3)}

Answer 1

A function is when 1 x value has ONLY 1 value

Answer 2

Function:
(2,3) (3,3) This is a function

Not a function:
(2,2) (2,7) Not a function

Answer 3

so would it be the first one sence each x value has its own value?

Answer 4

Yes, the x should always be different. Which ever one has none of the same x-values is a function

Answer 5

oh okay! thanks!

Answer 6

The answer is the second one

Answer 7

oh ok!