import seaborn as sns
import matplotlib.pyplot as plt
def plot_mpg_jointplot():
mpg_data = sns.load_dataset('mpg')
sns.jointplot(x='mpg', y='horsepower', data=mpg_data, kind="kde")
plt.suptitle('Joint Distribution of MPG and Horsepower', y=1.02)
plt.show()
plot_mpg_jointplot()