anonymous
  • anonymous
what is the Quadratic equation if the given Vertex is (0,-2), and the given points within the parabola is (2,0), and (-2,0)? please help!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Directrix
  • Directrix
If h and k are the coordinates of the vertex, the quadratic function in vertex form corresponding to this parabola is given by f(x) = a (x - h)^ 2 + k (h,k) = (0,-2) coordinates of vertex f(x) = a ( x - 0)^2 + (-2) y = a(x^2) - 2 (2,0) is a point on the parabola 0 = a(2^2) -2 2 = 4a a = 2/4 = 1/2 Equation: y = 1/2 (x^2) - 2
Directrix
  • Directrix
Click on link to see graph: http://www.wolframalpha.com/input/?i=y+%3D+1%2F2+%28x%5E2%29+-2+
Directrix
  • Directrix
OK?

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anonymous
  • anonymous
thanks! ^_^
Directrix
  • Directrix
Any time - thanks for the medal. :)

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