document.write( "Question 1064409: Find the vertex and axis of symmetry of the graph of the function. f(x) = -3x2 - 6x - 2 \n" ); document.write( "

Algebra.Com's Answer #679462 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
When the general form is:
\n" ); document.write( " $\"+f%28x%29+=+a%2Ax%5E2+%2B+b%2Ax+%2B+c+\"$
\n" ); document.write( "---------------------------
\n" ); document.write( "The formula for the vertex is:
\n" ); document.write( " $\"+x%5Bv%5D+=+-b%2F%282a%29+\"$
\n" ); document.write( " $\"+a+=+-3+\"$
\n" ); document.write( " $\"+b+=+-6+\"$
\n" ); document.write( " $\"+x%5Bv%5D+=+-%28-6%29+%2F+%28+2%2A%28-3%29+%29+\"$
\n" ); document.write( " $\"+x%5Bv%5D+=+6+%2F+%28-6%29+\"$
\n" ); document.write( " $\"+x%5Bv%5D+=+-1+\"$
\n" ); document.write( "------------------
\n" ); document.write( "Plug this result into the equation
\n" ); document.write( " $\"+f%28-1%29+=+-3%2A%28-1%29%5E2+-+6%2A%28-1%29+-+2+\"$
\n" ); document.write( " $\"+f%28-1%29+=+-3+%2B+6+-+2+\"$
\n" ); document.write( " $\"+f%28-1%29+=+1+\"$
\n" ); document.write( "------------------
\n" ); document.write( "The vertex is at ( -1, 1 )
\n" ); document.write( "----------------------------
\n" ); document.write( "The axis of symmetry is $\"+x+=+-1+\"$
\n" ); document.write( "-----------------------------------
\n" ); document.write( "Here's the plot:\r
\n" ); document.write( "\n" ); document.write( " $\"+graph%28+400%2C+400%2C+-5%2C+5%2C+-5%2C+5%2C+-3x%5E2+-+6x+-+2+%29+\"$ \n" ); document.write( "

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