matplotlib -- 선형방정식 x축, y축 그리기

matplotlib_line.py

import numpy as np
import matplotlib.pyplot as plt

plt.axvline(x=0, color = 'r')  # draw x =0 axes
plt.axhline(y=0, color = 'r')   # draw y =0 axes


x = np.arange(-10,10)
y = 2*x + 3

plt.plot(x, y)  # draw line
plt.plot(x, y, 'o')   # draw dots

# plt.plot(x, y, x, y, 'o')

plt.show()