Answer:
Negative X axis and parallel to Y axis.
Step-by-step explanation:
The standard equation of a parabola is given by
y^2 = 4ax
Where, the vertex of the parabola is (0,0), focus of teh parabola is (a, 0) and the directrix of the parabola is given by the equation x = - a. This directrix pass through the coordinates (-a, 0).
According to the question, the vertex of the parabola is (0,0) and the focus is located on the positive x axis.
So, the directrix pass through the negative X axis and the it is parallel to Y axis.
