Find the equation in standard form of the parabola described.The vertex has coordinates 
, and the focus has coordinates 
.
A. (x - 9)2 = 
B. 
2 = 
(y + 9)
C. (x + 9)2 = 
D. 
2 = 
(y - 9)
Answer: A
Mathematics
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and ? in quadrant II
A. 225° B. 45° C. 315° D. 135°
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A. Acute B. Obtuse C. Right D. Straight
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A. slope: undefined; y-intercept: none
B. slope: 0; y-intercept: (0, 3)
C. slope: undefined; y-intercept: none
D. slope: 0; y-intercept: (0, -3)
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Write an equation for the ellipse.foci at (±2
, 0); x-intercepts (±7, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
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