19. Conic Sections
Circles
Multiple Choice
Multiple ChoiceDetermine if the equation is a circle, and if it is, find its center and radius.
A
Is a circle, center = c(0,0), radius r=2.
B
Is a circle, center = c(0,0), radius r=3.
C
Is a circle, center = c(1,−2), radius r=3r=2.
D
Is not a circle.
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