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OpenStudy (anonymous):
OpenStudy (anonymous):
this you visualize
OpenStudy (anonymous):
i also need the equation of the ellipse if possible
OpenStudy (anonymous):
from -1 to -9 is 8 units for the length of the major axis
OpenStudy (anonymous):
center is at \((2,-5)\) so the equation will look like
\[\frac{(y+5)^2}{a^2}+\frac{(x-2)^2}{b^2}=1\] the \(y\) comes first because of the orientation
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OpenStudy (anonymous):
thank you so so much, really helpful, so the length of the major axis is 8 then?
OpenStudy (anonymous):
half of 8 is 4, vertices are four units up and down from the center, so you know \(a=4\) and therefore it will be
\[\frac{(y+5)^2}{16}+\frac{(x-2)^2}{b^2}=1\]
OpenStudy (anonymous):
so that equation would be the length of the major axis? can i simplify that more? @satellite73
OpenStudy (anonymous):
you need \(b\)
OpenStudy (anonymous):
how could i find that
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OpenStudy (anonymous):
the length of the minor axis is 6, again from your eyeballs. so \(b=3\) and \(b^2=9\) for your denominator
OpenStudy (anonymous):
take a look at the purple math link, it will really help
gotta run