document.write( "Question 323634: find the vertex, the line of symmetry, the max or min value of the quadratic function \r
\n" ); document.write( "\n" ); document.write( "f(x)=x^2-2x-3 \n" ); document.write( "
Algebra.Com's Answer #231593 by nerdybill(7384)\"\" \"About 
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find the vertex, the line of symmetry, the max or min value of the quadratic function \r
\n" ); document.write( "\n" ); document.write( "f(x)=x^2-2x-3
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\n" ); document.write( "\"axis of symmetry\":
\n" ); document.write( "x = -b/(2a)
\n" ); document.write( "x = -(-2)/(2*1)
\n" ); document.write( "x = 2/(2)
\n" ); document.write( "x = 1 (\"line of symmetry\")
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\n" ); document.write( "Plug the above in to find the vertex:
\n" ); document.write( "f(x)=x^2-2x-3
\n" ); document.write( "f(1)=1^2-2(1)-3
\n" ); document.write( "f(1)=1-2-3
\n" ); document.write( "f(1)=-4
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\n" ); document.write( "Because the coefficient associated with the x^2 term is POSITIVE, the vertex gives the MINIMUM:
\n" ); document.write( "Therefore, minimum value of quadratic is -4\r
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