Question

Is the following relation a function? (6,2) (-2,2) (4,1) (-1,1)

Answer 1

If each x term corresponds to exactly

one y term, the relation is a function.

In the data set shown here, notice that each x term, 6, -2, 4, and -1 appears only once. This means that each x term corresponds to exactly one y term. So yes, the relation is a function.