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anonymous

  • 5 years ago

Will a parabola always have two x intercepts?

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  1. myininaya
    • 5 years ago
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    no

  2. myininaya
    • 5 years ago
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    sometimes it won't cross the x-axis

  3. myininaya
    • 5 years ago
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    it might cross the x-axis once like f(x)=x^2

  4. anonymous
    • 5 years ago
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    oh lol thx (;

  5. anonymous
    • 5 years ago
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    oh ya i just did that on my graphing calculator

  6. myininaya
    • 5 years ago
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    example of a parabola not crossing the x axis is f(x)=x^2+2

  7. anonymous
    • 5 years ago
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    http://www.bbc.co.uk/schools/gcsebitesize/maths/algebra/transformationhirev1.shtml

  8. anonymous
    • 5 years ago
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    ah i seeee

  9. myininaya
    • 5 years ago
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    example of a parabola crossing the x-axis is f(x)=x^2-2

  10. myininaya
    • 5 years ago
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    that last example was it crossing twice

  11. anonymous
    • 5 years ago
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    thx u too virtus

  12. anonymous
    • 5 years ago
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    it depends on the value of the discriminant (b^2-4*a*c), if the discriminant is positive there are two intercepts, one intercept i f the discriminant is 0 and none if the discriminant is negative.

  13. myininaya
    • 5 years ago
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    so either 0,1, or 2 times a parabole will cross

  14. myininaya
    • 5 years ago
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    yes!

  15. anonymous
    • 5 years ago
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    and ya i typed all of the equations u said into my graphing calculator and got everything u said

  16. anonymous
    • 5 years ago
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    o i seeee o.o

  17. anonymous
    • 5 years ago
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    u ppl should be teachers or somethin lol ^^

  18. myininaya
    • 5 years ago
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    lol

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