Question

Is the following relation a function?
Two circles are shown, one labeled x and the other labeled y. The x circle contains the numbers 6, negative 1, and 4. The y circle contains the numbers 2, negative 1, and 3. Arrows map numbers from x to numbers from y. There are arrows going from 6 to negative 3, from negative 1 to 2, from negative 1 to negative 1, and from 4 to 3.

Answer 1

No, it isn't a function. The elements of the domain would have to be paired with only 1 element of the range, but -1 has 2 corresponding y-values.