Question

I need help with these! I was absent and never learned the lesson.

Answer 1

A true function can only have one specific y-value for each x-value.

Therefore, something like this would NOT be a function:

(2,3), (2,0) there are two y-values for the same x-value (not a function)

However, this example  WOULD be a function:

(2,3), (4,4), (5,2), (3,2)

it is still a function even if there are two of the same y-values for two different x-values. There just can't be two same x-values with different y-values.

Hope that helps!