Answer:
Step-by-step explanation:
can go into
twice at the most, so doubling
will give us
, which leaves us with
left over to reach 315, which is why
is the numerator. The remainder is ALWAYS the numerator.
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The equation of the vertical parabola in vertex form is written as
Where (h, k) are the coordinates of the vertex and p is the focal distance.
The directrix of a parabola is a line which every point of the parabola is equally distant to this line and the focus of the parabola. The vertex is located between the focus and the directrix, therefore, the distance between the y-coordinate of the vertex and the directrix represents the focal distance.
Using this value for p and (3, 1) as the vertex, we have our equation