document.write( "Question 876466: Find the vertex of the parabola, and the direction it opens.\r
\n" ); document.write( "\n" ); document.write( " $\"3x%5E2+-+12x+-+y+%2B+18+=+0\"$ \r
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Algebra.Com's Answer #528860 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Complete the square to get to vertex form,
\n" ); document.write( " $\"3x%5E2+-+12x+-+y+%2B+18+=+0\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=3x%5E2-12x%2B+18\"$
\n" ); document.write( " $\"y=3%28x%5E2-4x%29%2B+18\"$
\n" ); document.write( " $\"y=3%28x%5E2-4x%2B4%29%2B+18-3%2A4\"$
\n" ); document.write( " $\"y=3%28x-2%29%5E2%2B6\"$
\n" ); document.write( "(3,6)
\n" ); document.write( "Since $\"3%3E0\"$ , parabola opens up.
\n" ); document.write( " $\"graph%28300%2C300%2C-2%2C10%2C-2%2C10%2C3%28x-2%29%5E2%2B6%29\"$
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