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OpenStudy (anonymous):
identify type of conic section that has the equation x^2+y^2=81. Identify domain, range and axis of symmetry of conic section.
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OpenStudy (anonymous):
compare with equation of circle x^2+y^2=r^2
OpenStudy (anonymous):
range -9<=y<=9 and domain -9<=x<=9 for the circle
OpenStudy (anonymous):
yes and is symmetric about x-axis y-axis origin
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