Find - 4 - 2 1/2 expression on the number line by drawing an arrow
1 answer:
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Answer:
p=2
Standard form;
Step-by-step explanation:
The focal length of the parabola is the distance from the vertex to the focus of the parabola.
The focus of the parabola is (0,3).
The equation of the directrix is x=4
The distance from the focus to the direction is |4-0|=4
Half of this distance is the same as the distance from the focus to the vertex.
Therefore the focal length is
The vertex of the parabola is (2,3)
The standard form of the parabola is
The parabola is opens along the negative x-axis