Question

Which relation is a function? Help please

Answer 1

The one in the bottom right that is an absolute value function.

Explanation:

You can use the "vertical line test" to determine whether a given graph is a function or not. If you can draw a straight, vertical, line anywhere and it intersects the graph more than once, then it is not a function. The one in the bottom right is therefore the answer.

Answer 2

The bottom right (v shaped one) is a function

Explanation:

Hope this helps:)