anonymous
  • anonymous
What are the solutions of the equation 2x² = 8? Use a graph of the related function what are the coordinates of the parabola?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Mertsj
  • Mertsj
What do you mean, "What are the coordinates of the parabola"? There are an infinite number of ordered pairs on the parabola.
anonymous
  • anonymous
What are the solutions of the equation 2x² = 8? Use a graph of the related function
anonymous
  • anonymous
just answer that question

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Mertsj
  • Mertsj
x=2 or -2
anonymous
  • anonymous
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.
anonymous
  • anonymous
|dw:1332431137097:dw|what type of parabole is it? is
Mertsj
  • Mertsj
Is a positive or negative?
anonymous
  • anonymous
yea
anonymous
  • anonymous
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)
anonymous
  • anonymous
positive or negitive
anonymous
  • anonymous
It must open up since the a value is 2, which is positive.
anonymous
  • anonymous
'a' value
anonymous
  • anonymous
|dw:1332431233564:dw| like this?
anonymous
  • anonymous
Nope. The parabola is moving down by 8, not 4.
anonymous
  • anonymous
oh ok thank you i got the right answer now!
anonymous
  • anonymous
Great!

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