Question

(1,2) (1,8) (3,6) (4,8) is it a function?

Answer 1

No, this table is not a function.

Explanation:

`x: 1, 1, 3, 4\\y: 2, 8, 6, 8`

In the x column, you can see two one's
`(1)`. Also, in the y column, you can see two eight's
`(8)`.

Answer 2

No, because the x value of 1 correlates to two different y values.

Explanation:

A function is defined by an x value having exactly one corresponding y value. In this case, the x value of 1 corresponds to both the y values of 2 and 8, therefore invalidating it as a function.

Hope this helps!