anonymous
  • anonymous
please help.... i will attach question
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
\[x ^{2}+y ^{2} = 5\] graph the circle or ellipses....
anonymous
  • anonymous
would the radius be sqrt of 5
anonymous
  • anonymous
@freckles Can you help

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amilapsn
  • amilapsn
@sarahg7 yep
anonymous
  • anonymous
but how exactly do i graph that?
anonymous
  • anonymous
my center would be at the origin.. i think
anonymous
  • anonymous
Okay so because there isn't any numbers next to the exponents, the center of the circle would start at the point (0,0). The radius would be 5...
anonymous
  • anonymous
i thought it would be sqrt of 5
anonymous
  • anonymous
bc 5= r^2
amilapsn
  • amilapsn
|dw:1440612710148:dw|
anonymous
  • anonymous
dont get how you gor rhat^
freckles
  • freckles
@amilapsn was just graphing a random circle with center (h,k) and radius r.
freckles
  • freckles
your (h,k) is (0,0) and your radius is sqrt(5) has someone suggested earlier. So your radius is approximately 2.2 units in length.
freckles
  • freckles
so you would go to your center...And go up from 2.2 units put a dot Go back to the center go down 2.2 units put a dot Go back to the center count left 2.2 units put a dot Go back to the center count right 2.2 units put a dot
freckles
  • freckles
connect the dots forming a circle
anonymous
  • anonymous
oh gotchaaa!!! the other person was confusing me when they said the radius is 5
freckles
  • freckles
missed that it should be sqrt(5) it was probably a mistype on his part
anonymous
  • anonymous
too make sure i understnad \[x ^{a}+y ^{2} = 16\]
freckles
  • freckles
a is 2 right?
anonymous
  • anonymous
origin is (0,0). and i just go 4 units up, right, left, and down. (radius =4) yess sorry, mistype..
freckles
  • freckles
yep connect all those dots you found making it as circley looking as possible
anonymous
  • anonymous
lol connecting it to look circley is the hardest part... but what about a problem like.. \[\frac{ x ^{2} }{ 1} + \frac{ y ^{2} }{ 9 } = 1\]
freckles
  • freckles
that one is not a circle
freckles
  • freckles
this one is ellipse
freckles
  • freckles
\[\frac{(x-h)^2}{a^2}+\frac{(y-k)^2}{b^2}=1 \text{ has center } (h,k) \] ok... now I don't know if these are the technical terms for it... the thing under the x part tells us the "horizontal radius" from the center the thing under the y part tells us the "vertical radius" from the center
freckles
  • freckles
\[\frac{x^2}{4}+\frac{y^2}{25}=1 \\ \text{ has center } (0,0) \\ \text{ and horizontal radius } \sqrt{4}=2 \\ \text{ and vertical radius } \sqrt{25}=5\]
freckles
  • freckles
this would look like: |dw:1440614566689:dw| now this was horribly drawn
freckles
  • freckles
but I just counted up 5 from the center and down 5 from the center and I counted right and left from the center 2 units
anonymous
  • anonymous
so for my equation itd have a horizontal radius of 1 and a vertical radius of 3
freckles
  • freckles
yes
anonymous
  • anonymous
whic means 3 units up an down and one unit left and right
freckles
  • freckles
and like I said before those are probably not the technical terms but it is how I remember how to draw the things
freckles
  • freckles
yep
anonymous
  • anonymous
Thank youuu!
freckles
  • freckles
np

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