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
jamiebookeater
  • jamiebookeater
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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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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