document.write( "Question 953080: Find the vertex for the parabola given below.\r
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\n" ); document.write( "\n" ); document.write( "f(x) = 3x² + 12x + 16
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Algebra.Com's Answer #582010 by Alan3354(69443)\"\" \"About 
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\n" ); document.write( "The vertex of y = -3x²- 6x - 9 lies in which quadrant?
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\n" ); document.write( " vertex at x = -b/2a = 6/-6 = -1
\n" ); document.write( " y(-1) = -3 + 6 - 9 = -6
\n" ); document.write( " --> (-1,-6) in Q3
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