# 1.py

$$
y = wx + b
$$

## 梯度下降算法

$$
b_gradient += -\frac{2}{N} \left(y - (w_current \cdot x + b_current)\right)
$$



$$
w_gradient += -\frac{2}{N} \cdot x \cdot \left(y - (w_current \cdot x + b_current)\right)
$$