Answer:
The equation of parabola is given by:
where,
(h, k) is the vertex.
Focus = (h+a, k)
As per the statement:
A parabola has a vertex at (0,0).
⇒
The focus of the parabola is located at (4,0).
⇒a = 4
then, equation become:
We have to find the equation of directrix
The equation of directrix is, x = h-a
then;
x = 0-4 = -4
⇒x = -4
Therefore, the equation of directrix is, x = -4
Answer: No, it would be 2/5.
Step-by-step explanation: 2 1/4 - 6/7 is equal to about 1.4 when rounded to the nearest tenth. 1.4 as a fraction would be 4/10. 4/10 is simplified to 2/5 by dividing each number by 2.
Answer:120
Step-by-step explanation: