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anonymous

  • one year ago

Derive the equation of the parabola with a focus at (0, 1) and a directrix of y = −1.

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  1. anonymous
    • one year ago
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    pleasee help

  2. triciaal
    • one year ago
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    |dw:1438894741326:dw|

  3. triciaal
    • one year ago
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    F = focus, V = vertex, D = directrix

  4. triciaal
    • one year ago
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    everything clear so far

  5. anonymous
    • one year ago
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    yes

  6. anonymous
    • one year ago
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    ok what nexT?

  7. triciaal
    • one year ago
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    vertex (h, k)

  8. anonymous
    • one year ago
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    whats a and x?

  9. anonymous
    • one year ago
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    wait just a i meant

  10. anonymous
    • one year ago
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    like how do u find a

  11. anonymous
    • one year ago
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    would it be 4 or 1/4?

  12. triciaal
    • one year ago
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    substitute in the equation

  13. anonymous
    • one year ago
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    i did, would it be 4 or 1/4?

  14. triciaal
    • one year ago
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    what did you do?

  15. anonymous
    • one year ago
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    the answer choices just show a as being either 4 or 1/4

  16. anonymous
    • one year ago
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    or negative

  17. triciaal
    • one year ago
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    as in a = -1 right

  18. triciaal
    • one year ago
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    a cannot be negative because the parabola opens up the D is below F and V is in the middle of FD

  19. triciaal
    • one year ago
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    went blank sorry

  20. anonymous
    • one year ago
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    on the worksheet, my choices are 1/4x^2 and 4x^2

  21. anonymous
    • one year ago
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    do u know which one it is? @triciaal

  22. triciaal
    • one year ago
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    @zepdrix

  23. anonymous
    • one year ago
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    oh well, haha. thanks for your help

  24. anonymous
    • one year ago
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    still neeed help on this

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