Conics Review

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4 Terms

1
New cards

y = x²

  • Parabola

  • Opens UP (+) or DOWN (-)

  • x² = 4py

  • Directrix: y = #

<ul><li><p>Parabola</p></li><li><p>Opens UP (+) or DOWN (-)</p></li><li><p>x² = 4py</p></li><li><p>Directrix: y = #</p></li></ul><p></p>
2
New cards

x = y²

  • Parabola

  • Opens RIGHT (+) or LEFT (-)

  • y² = 4px

  • Directrix: x = #

<ul><li><p>Parabola</p></li><li><p>Opens RIGHT (+) or LEFT (-)</p></li><li><p>y² = 4px</p></li><li><p>Directrix: x = #</p></li></ul><p></p>
3
New cards

x² y²

— + — = 1

a² b²

  • Ellipse

  • Horizontal

  • Vertices: (± a, 0)

  • Foci: (± c, 0) where c² = a² - b²

<ul><li><p>Ellipse</p></li><li><p>Horizontal</p></li><li><p>Vertices: (± a, 0)</p></li><li><p>Foci: (± c, 0) where c² = a² - b²</p></li></ul><p></p>
4
New cards

x² y²

— + — = 1

b² a²

  • Ellipse

  • Vertical

  • Vertices: (0,± a)

  • Foci: (0, ± c) where c² = a² - b²

<ul><li><p>Ellipse</p></li><li><p>Vertical</p></li><li><p>Vertices: (0,± a)</p></li><li><p>Foci: (0, ± c) where c² = a² - b² </p></li></ul><p></p>