in MatLab, if you have x and y vectors and want to address an element in vector x, let's say i>=3 from which to construct a new vector x that starts from the addressed element until the last element and at the same time construct a new y vector corresponding to the new x vector?

x=[1 2 3 4 5 6 7]

y=[7 6 5 4 3 2 1]

new x should be=[4 5 6 7]

and new y =[4 3 2 1 ]

Maybe using an array=[x y]?

Any answer would be very much appreciated.

Thanks in advance