ACT Preparation / Unit 14 ACT 1317 short lesson, about 20 seconds
Parabola, Ellipse and Hyperbola
Captions available
The idea
In standard form, an ellipse is x²/a² + y²/b² = 1, a hyperbola x²/a² − y²/b² = 1, and a parabola has one squared variable.
In practice
x²/9 + y²/4 = 1 is an ellipse; x² − y² = 1 is a hyperbola; y = x² − 3 is a parabola.
Where people slip
The sign between the squares decides.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
- Nothing yet depends on this.
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