document.write( "Question 530678: Find the vertex of the parabola y= -2x2 + 12x - 13 \n" ); document.write( "

Algebra.Com's Answer #350188 by oberobic(2304) $\"\"$ $\"About$

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y = 2x^2 + 12x - 13
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\n" ); document.write( "The axis of symmetry is defined by x = -b/2a.
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\n" ); document.write( "-12/(2*2) = -3
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\n" ); document.write( "Set x= -3 and find y.
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\n" ); document.write( "2(-3)^2 +12(-3) -13 = 18 -36 -13 = -31
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\n" ); document.write( "The vertex is: (-3,-31)
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\n" ); document.write( " $\"+graph%28500%2C500%2C-15%2C5%2C-40%2C40%2C2%2Ax%5E2%2B12%2Ax-13%29+\"$ \n" ); document.write( "

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