Question

equation of a conic section : Ellipse - foci (2,-4) & (5,-4).. Verticies (-1,-4) & (8,-4) ???

Answer 1

I think this site has what we want. Try matching the information to the equation of ellipse: Ax2 + Cy2 + Dx + Ey + F = 0

Answer 2

http://www.purplemath.com/modules/conics.htm

Answer 3

okay thanks

Answer 4

First, we'll find the center using the midpoint formula.
(-1,-4) & (8,-4) -> \[\large \frac{-1+8}{2},\frac{-4+-4}{2}=>(\frac{7}{2},-4)\]

Answer 5

ooooookkk then what

Answer 6

I'm just taking this step by step following this problem. I have no idea what I'm doing

Answer 7

weelll at least ur tyring thts more then anyone else is f'ing doing .... thnx

Answer 8

cuz i was dead serious when i said i was in a group home and i need to graduate before i can go home

Answer 9

My wife left me. We all have our problems. Sadly, unless you're paying our lives don't revolve around you. The best we can do is help at our leisure

Answer 10

tuf lyfe man
i got u bruh
aight les get it
you need the general equation of an ellipse right?

Answer 11

thanks buddy figured that out but unless ur persistant enough nothings gonna get done for u or anyone else for that matter

Answer 12

yeah sham

Answer 13

first, we need to see if the ellipse is at the origin of a plane

Answer 14

so ill wolfram the coordinates sec.

Answer 15

its the equation for a conic section idk if thts the same thing

Answer 16

\[\large \frac{ x^2 }{ a^2 } + \frac{ y^2 }{ b^2 } = 1\]
if its centered at the origin of a plane
a is the radius along the x-axis
b is the radius along the y-axis


if its not then:
\[\frac{ (x-h)^2 }{ a^2 } + \frac{ (y-k)^2 }{ b^2 } = 1\]
a is the radius along the x-axis
b is the radius along the y-axis
h, k are the x,y coordinates of the ellipse's center

try graphing the ellipse first with the foci/vertices

Answer 17

ok gimme a sec.

Answer 18

ok done .... now what

Answer 19

plug in the center I gave you into the second equation shamil gave you

Answer 20

in english ...... plz

Answer 21

plug in (7/2, -4) into the second equation i put up there
ok?
also use the image up there that bib put so u can find the values of a and b