How to add a number to each column separtely in numpy array?

[Oliver]

I have a numpy array created like below for a graph. It graphs a unit box.

 np.array([[x, y] for x in np.arange(0, 1.01, .01) for y in
                     np.arange(0, 1.01, .01)])

I want to transform this "box" with a new numpy array so the new box appears elsewhere on the graph.

Having some trouble figuring out if I can slice a numpy array to do the addition I need.

My question is how do I add, say 1 to each x element and 3 to each y element?

Thanks in advance,

- oliver