generate with pandas and matlab a function that reads a csv called propines and returns a graph with columns "Total_ticket" and "Propina". And draw a line with pearson method

import pandas as pd
import matplotlib.pyplot as plt
import numpy as np

def read_csv(csv):
    return pd.read_csv(csv)

def draw_csv(csv, x, y):
    propinas = read_csv(csv)
    plt.scatter(x, y)
    plt.show()
    return

def draw_csv_with_pearson(csv, x, y):
    propinas = read_csv(csv)
    plt.scatter(x, y)
    plt.plot(np.unique(x), np.poly1d(np.polyfit(x, y, 1))(np.unique(x)))
    plt.show()
    return