inflection point are not well located #15

import matplotlib.pyplot as plt
from drawarrow import ax_arrow

fig, ax = plt.subplots()
ax.scatter([1, 2, 3, 8, 6, 10], [2, 5, 3, 9, 2, 10])
ax.set_xlim(0, 11)

ax_arrow(
    tail_position=[1.5, 2],
    head_position=[9.7, 9.5],
    inflection_position=[4, 8],
    color="red",
    double_headed=True,
    fill_head=False,
    head_width=4,
    head_length=5,
    ax=ax,
)
ax.axvline(x=4)
plt.show()