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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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Step-by-step explanation:

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For Simon, it means we want to find time = 1 hour on the horizontal axis at the bottom of the graph. Then we want to see where the graphed line crosses that vertical line. The point of crossing has horizontal line that goes over to 8 on the vertical distance axis. That is, Simon runs 8 miles in 1 hour.

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Answer:

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