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  1. This question is validated if the outputted plot looks like:

alt text

  1. This question is validated if the output is: 11808.867339751561

  2. This question is validated if grid.shape is (640000,2).

  3. This question is validated if the 10 first values of losses are:

array([158315.41493175, 158001.96852692, 157689.02212209, 157376.57571726,
    157064.62931244, 156753.18290761, 156442.23650278, 156131.79009795,
    155821.84369312, 155512.39728829])
  1. This question is validated if the outputted plot looks like

alt text

  1. This question is validated if the point returned is array([42.5, 99. ]). It means that a= 42.5 and b=99.

  2. This question is validated if the coefficients returned are

Coefficients (a): 42.61943031121358
Intercept (b): 99.18581814447936
  1. This question is validated if the outputted plot is

alt text

  1. This question is validated if the coefficients and intercept returned are:
Coefficients:  [42.61943029]
Intercept:  99.18581817296929