Science, Math, Mathematics, Linear Algebra, Python.
plt.axhline(y=0, color='#A9A9A9') plt.show() plt.close() Since the lines are parallel, there is no point at their intersection. The column figure illustrates the point as well: u = [0,0,2,2] v = [0,0,-1,-1] plt.quiver([u[0], v[0]], [u[1], v[1]], [u[2], v[2]], [u[3], v[3]], angles='xy',