anonymous
  • anonymous
what is the name of this conic? : 4x^2 + 4y^2 + 16x - 24y + 8 = 0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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myininaya
  • myininaya
Circle
anonymous
  • anonymous
thanks
myininaya
  • myininaya
Since the coefficients of x^2 and y^2 are the same

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anonymous
  • anonymous
ok, and is this an ellipse: x^2 + 9y^2 - 14x + 36y + 49 = 0
anonymous
  • anonymous
damn, myininaya you are GOOD at maths
myininaya
  • myininaya
it is an ellipse since the coefficients are not the same but both positive
anonymous
  • anonymous
ok thank you
myininaya
  • myininaya
whatever andruis Apparently I'm not that good since I can't figure out your problem
myininaya
  • myininaya
And there was no math involved here lol
anonymous
  • anonymous
:D, still, you are like 100 times better than me
anonymous
  • anonymous
how would you go about generating an equation for a parabola with diretrix x=6 and vertex (3,8) ??
myininaya
  • myininaya
brb i have to pee but the equation of parabola is f(x)=a(x-h)^2+k where (h,k) here =(3,8). So now all we have to find is a
anonymous
  • anonymous
whoa dude your aewsome
anonymous
  • anonymous
awesome* lol
myininaya
  • myininaya
honestly i never heard of a diretrix
myininaya
  • myininaya
i have to look it up
anonymous
  • anonymous
its "a fixed line" having to deal with a parabola, like the focus is a " fixed point"
myininaya
  • myininaya
ok. The equation y^2=4px is a parabola with focus (p,0) and directrix x=-p so...
myininaya
  • myininaya
omg wait
anonymous
  • anonymous
ok
myininaya
  • myininaya
i think im fixing to figure something out
anonymous
  • anonymous
thanks ive been out of school for weeks cuz i broke my arm my collar bone and my back lol so i havnt learned any of this
myininaya
  • myininaya
I think a is -1/24 since p=1/4a and p=-6 since the directrix is x=6
myininaya
  • myininaya
so I think the parabola is f(x)=-1/24(x-3)^2+8
anonymous
  • anonymous
thats great man i appreciate it
myininaya
  • myininaya
let me rewrite this so there is no confusion f(x)=-1*(x-3)^2/24+8
myininaya
  • myininaya
i'm not a man lol
anonymous
  • anonymous
oops my bad
myininaya
  • myininaya
I could be wrong though. you should check with someone else
anonymous
  • anonymous
alright well thanks anyway

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