Plotting Graphs + Bestfit lines

[arslanburney at gmail.com]

Umm.... Tried this out too.... Laiken heres the error that this
gives..

Traceback (most recent call last):
  File "D:\Questions\Gradient and C\Gnuplot\Combining Best fit and
Plotting\combasd.py", line 3, in <module>
    combine.show_plots([(2,3), (4,8), (5,9), (6,2)], [(1,7), (3,3),
(4,5), (5,6)], [(1,3), (3,10), (4,8), (7,9) ] )
  File "D:\Questions\Gradient and C\Gnuplot\Combining Best fit and
Plotting\combine.py", line 54, in show_plots
    gp = combine.plot( original, expected, actual)
NameError: global name 'combine' is not defined

Still confused though i get the instance part ur trying to tell me.