Create an array x=(2,2.3,2.6,...,4.7,5).

x = [2:5:.3]

Plot sqrt(x) vs. x as a line plot

set plotsymbol 0
graph x sqrt(x)

Plot sqrt(x) vs. x with disconnected plot symbols.

set plotsymbol -1
graph x sqrt(x)

  Create arrays of numerical values
  Define vectors (1-d arrays)