code: def g(x):
      x0, x1 = x
      return 7 * x1 - x0 + 5
  
file_path: mystic/examples2/output_constrain.py
imports: import numpy
  import mystic
  from matplotlib import cm
  import matplotlib.pyplot
label_desc: Use image node_id 2 for calling a global function with example usage: g(x) and returns: unknown