What exactly is the bias?

Course Q&A Deep Learning Specialization Convolutional Neural Networks
1

I am having a little confusion with bias. what exactly is it? and how do we know its value?

2

In the simplest example (a straight line hypothesis), the ‘bias’ is the y-intercept of the line.
It is a constant that is added to every hypothesis.

The bias value is one of the learned parameters.

3

Ohhh! got it! Thanks a ton.