Answer:
The order of equation is
Step-by-step explanation:
If a parabola is defined as
then the directrix of the parabola is
1.
The equation of the parabola is
The directrix of the parabola is
Similarly find the directrix of each parabola.
2.
The equation of the parabola is
The directrix of the parabola is
3.
The equation of the parabola is
The directrix of the parabola is
4.
The equation of the parabola is
The directrix of the parabola is
5.
The equation of the parabola is
The directrix of the parabola is y=-3.
6.
The equation of the parabola is
The directrix of the parabola is y=-1.
7.
The equation of the parabola is
The directrix of the parabola is y=-2.
8.
The equation of the parabola is
The directrix of the parabola is y=4.