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HAYESxELITE

  • 4 years ago

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

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

  3. HAYESxELITE
    • 4 years ago
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    just answer that question

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

  5. MrYantho
    • 4 years ago
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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.

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

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

  8. HAYESxELITE
    • 4 years ago
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    yea

  9. MrYantho
    • 4 years ago
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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)

  10. HAYESxELITE
    • 4 years ago
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    positive or negitive

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

  12. MrYantho
    • 4 years ago
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    'a' value

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

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

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

  16. MrYantho
    • 4 years ago
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    Great!

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