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anonymous

  • one year ago

What is the axis of symmetry for y = {x^2} - 8x + 8? Be sure to use correct notation.

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  1. alekos
    • one year ago
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    axis of symmetry, x = -b/2a

  2. alekos
    • one year ago
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    where the general form of a parabola is y= ax^2+bx+c

  3. anonymous
    • one year ago
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    Okay I know the vertex is 4,-8

  4. alekos
    • one year ago
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    well then the axis of symmetry is just the x value of the vertex

  5. anonymous
    • one year ago
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    which is 4 my other problem was setting it up as an equation

  6. anonymous
    • one year ago
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    y = (x-4)^2 - 8 this is what i have

  7. alekos
    • one year ago
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    yeah thats correct

  8. anonymous
    • one year ago
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    though it says I was wrong when I tried to submit it

  9. alekos
    • one year ago
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    who says it was wrong?

  10. anonymous
    • one year ago
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    when I try to submit my assignment it counts the equation wrong

  11. alekos
    • one year ago
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    But that is the correct vertex form of your original equation and x=4 is the equation for the axis of symmetry

  12. anonymous
    • one year ago
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    that's what happen I have -4

  13. alekos
    • one year ago
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    ok, there you go

  14. anonymous
    • one year ago
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    so its x=4

  15. alekos
    • one year ago
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    oh yes it is

  16. anonymous
    • one year ago
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    it's right thank you :D

  17. alekos
    • one year ago
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    no problemo

  18. anonymous
    • one year ago
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    although I have more questions I may need help on in a few minutes

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