Find the focus and directrix of the parabola with the given equation.5x2 = -9y
A. Focus: 
, directrix: y = 
B. Focus: 
, directrix: y = 
C. Focus: 
, directrix: x = 
D. Focus: 
, directrix: y = - 
Answer: A
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A. 43-51 B. 43-51; 52-60 C. 7-15 D. 34-42
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rather than 
?
What will be an ideal response?
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?
?
A. 896 ft-lb B. 901 ft-lb C. 899 ft-lb D. 900 ft-lb E. 895 ft-lb