How to Visualize a Surface?

how to visualize a surface given with basic line,i.e. y(x)=(16-x2)1/2?

[Alexandra Harkai]

What exactly are you trying to visualise when you mean 'surface'? What values would the third coordinates take?

In case you need a 2d line plot, here's how to do it: https://uk.mathworks.com/help/matlab/ref/plot.html