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Mathematics 6 Online
OpenStudy (anonymous):

Help ! {image attached}

OpenStudy (anonymous):

OpenStudy (primeralph):

which one?

OpenStudy (anonymous):

All of them .

OpenStudy (anonymous):

@primeralph

OpenStudy (primeralph):

chill.

OpenStudy (primeralph):

.can't really see the stuff.can you type them out?

OpenStudy (anonymous):

Okay.

OpenStudy (anonymous):

1. \[\frac{ x^2 }{ 16 } + \frac{ y^2 }{ 36 }=1\] Vertices: CoVertices: Foci:

OpenStudy (anonymous):

2. 9y^3-4x^3=36 Standard Form: Vertices: Foci:

OpenStudy (anonymous):

3. (x-2)^2 = 8(y+1) Vertices: Foci: Directrix:

OpenStudy (anonymous):

Graph: \[\frac{ (x+3)^2 }{ 4 } + \frac{ (y-1)^2 }{ 25 } = 1\] Center: Vertices: Foci:

OpenStudy (anonymous):

They all need to be graphed.

OpenStudy (primeralph):

what are your answers?

OpenStudy (anonymous):

I don't have any besides the first one. I'm not good with this topic.

OpenStudy (anonymous):

First one I have: Vertices: (0,6)(0,-6) Covertices:? Foci: (0,2sqrt5)(0,-2sqrt5)

OpenStudy (primeralph):

you're doing good, co-vertices will be the x part, + and - like you did the y part for vertices.

OpenStudy (primeralph):

that is only because the x is less. larger = vertices smaller = co-vertices

OpenStudy (anonymous):

(4,0)(-4,0) ?

OpenStudy (primeralph):

yeah

OpenStudy (anonymous):

Okay so what about for #2?

OpenStudy (primeralph):

post your answers first............I can only help check what you've done....

OpenStudy (anonymous):

I haven't done any others.. I don't know how .

OpenStudy (primeralph):

okay, you got the standard form........

OpenStudy (anonymous):

Okay...?

OpenStudy (primeralph):

plug in 0 for x and 0 for y to find vertices

OpenStudy (primeralph):

........I'm sorry, I got to go....I'm cooking.

OpenStudy (anonymous):

Okay thank you.

OpenStudy (anonymous):

type in 8 and 9.

OpenStudy (anonymous):

think 7 is right.

OpenStudy (anonymous):

actually, type that too.

OpenStudy (anonymous):

The questions are typed above.

OpenStudy (anonymous):

See them? @macknojia

OpenStudy (anonymous):

ohh, my bad. alright so number 8 on your worksheet is a parabola.

OpenStudy (anonymous):

number 9 is an ellipse.

OpenStudy (anonymous):

Okay great. So what are the vertices, foci, and directrix? And how is it graphed?

OpenStudy (anonymous):

parabola is simple enough. for the ellipse you find the a and b which will be 2 and 5.

OpenStudy (anonymous):

so its vertically longer than horizontally

OpenStudy (anonymous):

So for #9: whats the center, vertices, and foci?

OpenStudy (anonymous):

hold up my memory is kinda hazy on this.. isnt the focus=sqrt(a^2+b^2)

OpenStudy (anonymous):

I'm not sure I'm no good at this either lol.

OpenStudy (anonymous):

alright let me check online. check your notes lol

OpenStudy (anonymous):

Alright well I'm gonna go to bed, thanks for the help! :)

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