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misssunshinexxoxo

  • one year ago

2.An archway will be constructed over a walkway. A piece of wood will need to be curved to match a parabola. Explain to Maurice how to find the equation of the parabola given the focal point and the directrix.

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  1. misssunshinexxoxo
    • one year ago
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    @Algorithmic

  2. misssunshinexxoxo
    • one year ago
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    Attempted this several times; I am stuck

  3. anonymous
    • one year ago
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    im sorry ill find you help cause idk either

  4. misssunshinexxoxo
    • one year ago
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    @Ashleyisakitty

  5. misssunshinexxoxo
    • one year ago
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    @camacho01erick

  6. anonymous
    • one year ago
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    @brucebaner @KEYS

  7. misssunshinexxoxo
    • one year ago
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    @jim_thompson5910

  8. misssunshinexxoxo
    • one year ago
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    @Deadpool117

  9. anonymous
    • one year ago
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    ._., idk u tell me?

  10. misssunshinexxoxo
    • one year ago
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    To solve the equation of the parabola, I would need to use the distance formula and substitute the focal point in (x1-y1). Also use the distance formula for the directrix. Since it is a straight line, the x part could be eliminated and the remaining part of the formula would be used, substituting the y for the given measurement of the directrix. The two unfinished formulas would be combined and then solve for the equation. f(x) would be the unit of measurement for parabola.

  11. misssunshinexxoxo
    • one year ago
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    how do I make this directly answer the question better? got it wrong

  12. anonymous
    • one year ago
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    no clue :/

  13. misssunshinexxoxo
    • one year ago
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    Please kindly help @jim_thompson5910

  14. jim_thompson5910
    • one year ago
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    "An archway will be constructed over a walkway" so we know that the parabola opens downward and might look something like this |dw:1434411400497:dw|

  15. jim_thompson5910
    • one year ago
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    The focus is always on the inside of the curve with the directrix on the other side of the parabola |dw:1434411427156:dw|

  16. jim_thompson5910
    • one year ago
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    if you know where the focal point and directrix are, then you can use them to find the vertex |dw:1434411451512:dw|

  17. jim_thompson5910
    • one year ago
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    |dw:1434411491090:dw|

  18. jim_thompson5910
    • one year ago
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    |dw:1434411517689:dw|

  19. jim_thompson5910
    • one year ago
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    the vertex is (h,k) p is the focal distance you use those bits of info to plug them into 4p(y-k) = (x-h)^2 to get the parabolic equation

  20. jim_thompson5910
    • one year ago
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    |dw:1434411602993:dw|

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