document.write( "Question 1082233: Line of symmetry of the parabola x^2+2x-y+1=0 is \n" ); document.write( "

Algebra.Com's Answer #696292 by Fombitz(32388) $\"\"$ $\"About$

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Convert to vertex form,
\n" ); document.write( " $\"y=x%5E2%2B2x%2B1\"$
\n" ); document.write( " $\"y=%28x%2B1%29%5E2%2B0\"$
\n" ); document.write( "(-1,0) is the vertex so $\"x=-1\"$ is the line of symmetry.
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