Retrieving Linear regression coefficients for the multivariable case

General Discussion
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#1

Hello. I am a newbie here. I tried to follow the tutorial on Keras/regression for what they call a multivariable regression model (Regresion Basica: Predecir eficiencia de gasolina  |  TensorFlow Core)

I am used to y = b0+b1x1+ … bkxk models where coefficients bi are estimated.
Is this something different? How can I get the coefficients for the model?

I see only how to get the loss function.

#3

if your model has a single layer, model.layers[0].weights gives you the coefficients.