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HAYESxELITE

What are the solutions of the equation 2x² = 8? Use a graph of the related function what are the coordinates of the parabola?

  • 2 years ago
  • 2 years ago

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  1. Mertsj
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    What do you mean, "What are the coordinates of the parabola"? There are an infinite number of ordered pairs on the parabola.

    • 2 years ago
  2. HAYESxELITE
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    What are the solutions of the equation 2x² = 8? Use a graph of the related function

    • 2 years ago
  3. HAYESxELITE
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    just answer that question

    • 2 years ago
  4. Mertsj
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    x=2 or -2

    • 2 years ago
  5. MrYantho
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    This is like the other question except first you need an an equation: \[2x^2=8\] \[2x^2-8=0\] \[y=2x^2-8\] Since you need to graph, this is a parabola which has been vertically stretched by a factor of 2, and then shifted down 8.

    • 2 years ago
  6. HAYESxELITE
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    |dw:1332431137097:dw|what type of parabole is it? is

    • 2 years ago
  7. Mertsj
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    Is a positive or negative?

    • 2 years ago
  8. HAYESxELITE
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    yea

    • 2 years ago
  9. MrYantho
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    The reason we make the expression equal 0, and then replace 0 with y is because we want to know the value of x when y=0....because that would be an x-intercept (solution)

    • 2 years ago
  10. HAYESxELITE
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    positive or negitive

    • 2 years ago
  11. MrYantho
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    It must open up since the a value is 2, which is positive.

    • 2 years ago
  12. MrYantho
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    'a' value

    • 2 years ago
  13. HAYESxELITE
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    |dw:1332431233564:dw| like this?

    • 2 years ago
  14. MrYantho
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    Nope. The parabola is moving down by 8, not 4.

    • 2 years ago
  15. HAYESxELITE
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    oh ok thank you i got the right answer now!

    • 2 years ago
  16. MrYantho
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    Great!

    • 2 years ago
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