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OpenStudy (anonymous):
y=2x^2+4x-8 The x-coordinate of this vertex is located at ____.
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OpenStudy (anonymous):
|dw:1377624337276:dw|
OpenStudy (anonymous):
Sorry, I mean -8 is located at y.
OpenStudy (anonymous):
i dont get it @Lagoonabarbie @Yahoo!
OpenStudy (debbieg):
x-coordinate of the vertex is given by x=-b/(2a)
OpenStudy (debbieg):
Just plug b and a into that. that's your x at the vertex.
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