Question

Which domain number causes this relation not to be a function?
R = { (-3, -2), (-2, -1), (-1, 0), (-1, -1), (0, 0), (1, 1) }

Answer 1

the repeated one

Answer 2

the domain is all the x values and the range is all the y values.
It is not a function if there are more then 1 x value the same...there can be more then 1 y value the same, but not x values the same.
So which number in the x values are repeated ?

Answer 3

-1?