import matplotlib.pyplot as plt
import math
import numpy as np

def f(x):
	return 2*x+5
	
x_values = np.random.uniform(-1.0, 1.0, 50)
y_values = f(x_values) + np.random.uniform(-0.2, 0.3, 50)

plt.scatter(x_values, y_values)
plt.savefig('img/plot_scatter_correlated.png')
plt.show()