Discuss the equation and graph it.r = 
A. ellipse, directrix parallel to
the polar axis 
unit below the pole
vertices (
, 
), (
, 
)
B. hyperbola, directrix perpendicular to
the polar axis 
unit right of the pole
vertices (
, 0), (- 
, ?)
C. hyperbola; directrix parallel to
the polar axis 
unit above the pole
vertices (
, 
), (- 
, 
)
D. ellipse, directrix perpendicular to
the polar axis 
unit left of the pole
vertices (
, 0), (
, ?)
Answer: C
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Find the sum, if it exists.
A. - 4
B. 40
C. 
D. Does not exist
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B. - 
C. - 
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