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swat32
3 years ago
13

Given the vertex (2,9) and the foci (5,9), what is the equation of the directrix

Mathematics
1 answer:
Gennadij [26K]3 years ago
6 0

Answer:

x = -1

Step-by-step explanation:

The vertex is halfway between the focus and the directrix.

So here the directrix is  a vertical line  to the left of the vertex and passing through the point (2-3, 9) = (-1, 9)

It is x = -1.

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