code: def _lin_fcn(B, x):
      a, b = B[0], B[1:]
      b.shape = (b.shape[0], 1)
  
      return a + (x * b).sum(axis=0)
  
imports: import numpy
  from scipy.odr.odrpack import Model
label_desc: Use image node_id 1 for calling a global function with example usage: _lin_fcn(B, x) and returns: unknown