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The equation represents an ellipse.
Which lines represent the approximate directrices of the ellipse? Round to the nearest tenth.

A. x = −8.6 and x = 8.6
B. x = −6.6 and x = 10.6
C. y = −8.6 and y = 8.6
D. y = −6.6 and y = 10.6

Respuesta :

Answer:

The answer is D. y = −6.6 and y = 10.6

Step-by-step explanation:

First of all, this is an ellipse with a vertical major axis so it would have to be y =  #

d=a2/c      

d is the distance between the center and the directrix.

a= 8   b=3

c2=a2-b2

=64-9

c2=55

= about 7.4

d=64/7.4

=8.6

y= 2+8.6

y=10.6

y=2-8.6

y=-6.6

Brainliest Answer Maybe?

Answer: D

Step-by-step explanation:

Have a good day!

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