Question

Please help me quick I need it, i don't understand and it's due in 5 mins quick

Answer 1

The third one, fourth one, and sixth one.

Explanation:

If there are repeating x values in the domain, the function would not be valid, for vertical lines would form. Every input (domain) must only have one output (range), but every output can have multiple different inputs.

Answer 2

#3 and #4 and #6

Explanation:

a function is when there is only one x for one y, so if two points have the same x value but different y value, they cannot be a function