document.write( "Question 1142478: How do I determine the quadratic equation when the vertex is (3,-4) and the given point is (2,1)?
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\n" ); document.write( "How do I determine the quadratic equation when the vertex is (3,-4) and the given point is (2,1)?
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Vertex form of a quadratic function: 
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document.write( "                                      ------- Substituting (3, - 4) for (h, k), and (2, 1) for (x, y)
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document.write( "                                     1 = a - 4 ====> a = 5
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document.write( "                                     Quadratic equation:  \n" );
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