Forming a 3D plane

Hi all, So i'm new to matlab and kinda just working my way around the program with the help of google. I am trying to create a 3D plane on a graph, and have my co-ordinates, however, x and y always = 5 and therefore when I try to use to dot cross method it equates to 0. Does anyone know how to get around this? Thanks

Answer 1

[John D'Errico]

If BOTH x and y are always 5, then you don't have a plane. In 3 dimensions, this will define no more than a line.

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