document.write( "Question 549577: Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point.\r
\n" ); document.write( "\n" ); document.write( "f(x) = -x2 - 2x - 6 \n" ); document.write( "

Algebra.Com's Answer #357864 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+f%28x%29+=+-x%5E2+-+2x+-+6+\"$
\n" ); document.write( "The coefficient of the squared term
\n" ); document.write( "is negative, so the vertex is at a
\n" ); document.write( "maximum
\n" ); document.write( " $\"+x%5Bmax%5D+=+-b%2F%282a%29+\"$
\n" ); document.write( " $\"+x%5Bmax%5D+=+-%28+-2%29%2F%282%2A%28-1%29%29+%29+\"$
\n" ); document.write( " $\"+x%5Bmax%5D+=+-1+\"$
\n" ); document.write( " $\"+f%28-1%29+=+-%28-1%29%5E2+-+2%2A%28-1%29+-+6+\"$
\n" ); document.write( " $\"+f%28-1%29+=+-1+%2B+2+-+6+\"$
\n" ); document.write( " $\"+f%28-1%29+=+-5+\"$
\n" ); document.write( "The vertex is at (-1,-5)
\n" ); document.write( "Here's the plot:
\n" ); document.write( " $\"+graph%28+400%2C+400%2C+-6%2C+6%2C+-16%2C+2%2C+-x%5E2+-+2x+-+6+%29+\"$ \n" ); document.write( "

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