Quick Start, Quick Question

RapidUser

Hi,
Can somebody please let me know how to handle the following problem?
I have an m-by-n (m rows, n columns) matrix M of positive integers
e.g. 4-by-2 M=[[1,2],[2,4],[3,6],[4,8]]
I want to learn the relation between the variables x of column 1 and the variables y of column 2
Here, the answer should be y=2.x
How do I represent the problem+data and use RapidMiner from command prompt to solve it?
Thanks,
A super new user.