Answer:
2 and 4
Explanation:
The directrix and the focus are equidistant from the vertex.
The focus is inside the parabola while the directrix is outside.
The directrix does not intersect the graph thus NOT 1
In graph 2
The focus is 5 units from the vertex as is the directrix on the other side.
In graph 3
The focus is 1 unit from the vertex while the directrix is 3 ← not equidistant
In graph 4
The focus and directrix are both 1 unit from the vertex
The graphs showing the correct positions of focus and directrix are 2 and 4