Conic Sections Answers
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1
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The angle between the generator and the central axis of a double-napped cone is 40°. A plane intersects the central axis at an angle between 40° and 90°. Which conic section is formed?
A
circleB
ellipseC
hyperbolaD
parabola2
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Which graph represents the equation y = – (x – 1)2 + 1?
A
On a coordinate plane, a parabola opens up. It goes through (0, 2), has a vertex at (1, 1), and goes through (2, 2).
B
On a coordinate plane, a parabola opens down. It goes through (0, 0), has a vertex at (1, 1), and goes through (2, 0).
C
On a coordinate plane, a parabola opens down. It goes through (negative 2, 0), has a vertex at (negative 1, 1), and goes through (0, 0).
D
On a coordinate plane, a parabola opens up. It goes through (negative 2, 2), has a vertex at (negative 1, 1), and goes through (0, 2).
3
Review the graph of a parabola.
A
2(x + 2) = (y + 3)2B
2(y + 2) = (x + 3)2C
–2(y + 2) = (x + 3)2D
–2(x + 2) = (y + 3)24
Consider the equation (x – 5) = (y – 2)2. What is the equation of the directrix?
A
x = 4.0000B
x = 4.7500C
x = 4.6250D
x = 4.9375Did you find these answers helpful?
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