document.write( "Question 1084125: Complete the square to write each function in f(x) = a(x-h)^2 + k form. Determine the vertex and the axis of symmetry of the graph of the function. Then plot several points to complete the graph. \r
\n" ); document.write( "\n" ); document.write( "f(x) = x^2 - x - 6
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Algebra.Com's Answer #698188 by MathLover1(20849)\"\" \"About 
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Complete the square to write each function in \"f%28x%29+=+a%28x-h%29%5E2+%2B+k\" form. Determine the vertex and the axis of symmetry of the graph of the function.
\n" ); document.write( "Then plot several points to complete the graph. \r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=+x%5E2+-+x+-+6\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=%28x%5E2+-+x+%2Bb%5E2%29-b%5E2-+6\"...since \"a=1\" and \"2ab=-1\" we can determine \"b\"\r
\n" ); document.write( "\n" ); document.write( "\"2ab=-1\"->\"2%2A1%2Ab=-1\"->\"2b=-1\"->\"b=-1%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=%28x%5E2+-+x+%2B%28-1%2F2%29%5E2%29-%28-1%2F2%29%5E2-+6\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=%28x+-1%2F2%29%5E2-%281%2F4%29-+6\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=%28x+-1%2F2%29%5E2-%281%2F4%29-+24%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=%28x+-1%2F2%29%5E2-25%2F4\"\r
\n" ); document.write( "\n" ); document.write( "so, \"h=1%2F2\" and \"k=-25%2F4\"->the vertex is at (\"1%2F2\",\"-25%2F4\")≈(\"0.5\", \"-6.25\")\r
\n" ); document.write( "\n" ); document.write( "The axis of symmetry of a parabola is the vertical line through the vertex.\r
\n" ); document.write( "\n" ); document.write( "so, axis of symmetry is \"x=1%2F2\" or \"x=0.5\"\r
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\n" ); document.write( "\n" ); document.write( "table:\r
\n" ); document.write( "\n" ); document.write( "\"x\"|\"y\"
\n" ); document.write( "\"-2\"|\"0\"....\"f%28-2%29+=+%28-2%29%5E2+-+%28-2%29-+6=4%2B2-6=0\"
\n" ); document.write( "\"-1\"|\"-4\"....\"f%28-1%29+=+%28-1%29%5E2+-+%28-1%29-+6=1%2B1-6=-4\"
\n" ); document.write( "\"0\"|\"-6\"....\"f%280%29+=+%280%29%5E2+-+%280%29-+6=0%2B0-6=-6\"
\n" ); document.write( "\"1\"|\"-6\"....\"f%281%29+=+%281%29%5E2+-+%281%29-+6=1-1-6=-6\"
\n" ); document.write( "\"2\"|\"-4\"....\"f%282%29+=+%282%29%5E2+-+%282%29-+6=4-2-6=-4\"\r
\n" ); document.write( "\n" ); document.write( "plot points and draw a graph:\r
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