Task 910
Task 910: development task in emrekuruu/math-openenv, an RL environment on the Hugging Face Hub. Find the equation of the directrix of the parabola $y = \frac{x^2 - 6x + 5}{12}.$
The task
Find the equation of the directrix of the parabola $y = \frac{x^2 - 6x + 5}{12}.$