Question

Can someone help me pls!!!

Answer 1

The first one is a function.

The second one is not a function.

The third one is a function.

The fourth one is not a function.

Answer 2

First one: Function

Second one: not a function (a function cannot have two outputs)

Third one: Function

Last one: Not a function (doesn't pass vertical line test)

Explanation:

Hope it helps!