Find the equation of the directrix of the parabola $y = \frac{x^2 - 6x + 5}{12}.$
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find the equation of the directrix of the parabola $y = \frac{x^2 - 6x + 5}{12}.$
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
y = -\frac{10}{3}
Find the equation of the directrix of the parabola $y = \frac{x^2 - 6x + 5}{12}.$
train