in colum one is 1,4,7, x + 1

Amber, I'm not sure of what you are asking. I'm presuming the problem is set up something like this:

*x* + 1

*x y*

1 ?

4 ?

7 ?

The function is *x* + 1. What does this mean? To each *x*, add 1.

If x = 1, what is y? y = 2

If x = 4, what is y? y = 5

If x = 7, what is y? y = 8

I hope this helps.