document.write( "Question 700758: instructions: graph each quadratic function. name the axis of symmetry and the coordinates of the vertex.\r
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document.write( "1. y=-x^2+7x-2 \n" );
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Algebra.Com's Answer #431995 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! graph each quadratic function. name the axis of symmetry and the coordinates of the vertex. \n" ); document.write( " y = -x^2+7x-2 \n" ); document.write( "----- \n" ); document.write( "The 1st coordinate of the vertex and the equation of the axis of symmetry \n" ); document.write( "are x = -b/(2a) = -7/(2*-1) = -7/-2 = 7/2 \n" ); document.write( "------ \n" ); document.write( "The 2nd coordinate of the vertex is f(7/2) \n" ); document.write( "----- \n" ); document.write( "f(7/2) = -(7/2)^2 + 7(7/2) -2 = -(49/4) + (49/2) - 2 \n" ); document.write( "--- \n" ); document.write( "= (-49 + 98 - 8)/4 \n" ); document.write( "---- \n" ); document.write( "= 41/4 \n" ); document.write( "---- \n" ); document.write( "Vertex: (7/2 , 41/4) \n" ); document.write( "------- \n" ); document.write( " \n" ); document.write( "========================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |