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4 cards from this section. Quick, good the night before a test.
Define a parabola.
Think about the definitions of the focus and directrix.
What is the standard equation of a parabola that opens upwards?
Recall that this represents a vertical orientation.
What defines a parabola?
What are the two key components that define a parabola?
The equation describes a parabola that opens...
Recall what a positive 'a' infers about the direction.
Given a parabola with a focus at (1, 2) and directrix y = 0, derive its equation.
Remember the definition that connects focus and directrix to the equation.
Find the equation of the parabola that has its vertex at the origin and opens downwards with a focus at (0, -3).
Identify the orientation based on how the focus is positioned.
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