Plotting a function with multiple solutions in one trace

Mathcad Prime 9

Hello,

I am trying to plot a function which has a matrix as one of its variables.  I want to plot the function as one trace so that when the matrix grows or shirks with length, I don't have to add or subtract plot traces.

I made a simple example of oxygen displacement in a room with a range of different asphyxiant gas (3x1 matrix) for a given room and ventilation rate.

I could display the result of all three curves by adding three traces and use the matrix index...but I want to avoid this manual step and automatic plot all the curves, let's say... when I modify the asphyxiant gas rate to be a 6x1 matrix or a 2x1 matrix. I think I've seen this done before, but don't recall where.

Thanks,

Regards, 

Colin