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Write the equation for an ellipse with covertices (0,3) and (0,3), major axis of length 10.
 one year ago
 one year ago
Write the equation for an ellipse with covertices (0,3) and (0,3), major axis of length 10.
 one year ago
 one year ago

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iheartfoodBest ResponseYou've already chosen the best response.0
@jim_thompson5910 :)
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
where is the center?
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
idk.. it doesn't say... it just says what i typed in :/
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
i know, you have to find it
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
the covertices lie along the minor axis
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
ok, how do we do that?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
the midpoint of this minor axis is where the center is
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
minor is vertical or horizontal?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
(0,3) and (0,3) lie on what line?
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
so would the center be (0,0) ??
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
no, you have it flipped
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
okay so how do i write this equation?? oh the y axis?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
so the minor axis is vertical
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
the major must be horizontal
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
ohh okay :) so its on the major axis?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
no they are on the minor axis because they are covertices
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
ohh okay i see... what do we do now??
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
how long is the minor axis?
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
idk :/ how do i find that?? i just know the major axis is 10...
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
what's the distance between the covertices?
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
6? so is 6 the length of the minor axis?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
cut that in half to get 3 that's the length of the semiminor axis
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
since the minor axis is vertical, this value of 3 corresponds to the value of b (which is paired with the y term below) (xh)^2/(a^2) + (yk)^2/(b^2) = 1
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
you know the center is (0,0) because you just found this, so (h,k) = (0,0)
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
okay :) so far we have this? (x0)^2/(a^2) + (y0)^2/(3^2)=1 ??
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
good, the only thing you need is 'a'
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
how do we find that? do we square root 10? if so, can i just write sq.rt.10?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
no, the length of the major axis is 10 the length of the semimajor axis is ____
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
okay so is this my final equation??dw:1356131103670:dw is that it?? or do i need to simplify it more?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
you can simplify it more if you want
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
dw:1356131176856:dw
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
but when it says write the equation, what format do they want it in?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
there are many formats, but that's probably the best one
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
because you can tell it's an ellipse and you can use it to read off the center, major axis, minor axis lengths, etc etc
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
the simplified version?
 one year ago

iheartfoodBest ResponseYou've already chosen the best response.0
kk so we are done now?? htats it?
 one year ago
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