# importing libraries
import matplotlib.pyplot as plt
import numpy as np

# defining the x values
x = np.linspace(-10, 10, 100)

# defining the equation
y = 2*x - 1

# creating the plot
plt.plot(x, y)

# labeling the axes and title
plt.xlabel('x', fontsize = 15)
plt.ylabel('y', fontsize = 15)
plt.title('Graph of y=2x-1', fontsize = 15)

# displaying the plot
plt.show()