Please help me I will give you the brain thing and extra points image below. Which statement about this mapping is true?

The mapping represents y as a function of x, because each y-value is related to exactly one x-value.

The mapping represents y as a function of x, because each x-value is related to exactly one y-value.

The mapping does not represent y as a function of x, because 4 y-values are related to 1 x-value.

The mapping does not represent y as a function of x, because there are more x-values than related y-values.