document.write( "Question 74682: sketch a graph of the following (find and include focal points, verticies, asymptotes, directrix, as appropriate). Estimate any irrational values on the graph.\r
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document.write( "1. y = 2x^2 - 10x + 27\r
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document.write( "first i tried to get all of the x and y's to one side, then complete the square, but i didn't know how because y in this problem is not squared...but i tried it anyway and got... 27/4 (y-27)= x^2 - 5x + 25/4 ...i'm not sure where to go from here>??? \n" );
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Algebra.Com's Answer #53656 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! y = 2x^2 - 10x + 27 \n" ); document.write( "This is the equation of a parabola opening up. \n" ); document.write( "2(x^2-5x+(5/2)^2) = y - 27 + 2*(25/4) \n" ); document.write( "2(x-(5/2))^2 = y-58/4 \n" ); document.write( "2(x-(5/2))^2 = y-29/2 \n" ); document.write( "(x-(5/2))^2 = (1/2)(y-29/2) \n" ); document.write( "---------- \n" ); document.write( "4p=1/2 ; p=1/8 \n" ); document.write( "Vertex at (5/2,29/2) \n" ); document.write( "Focus at (5/2, 29/2 + 1/8) = (5/2, 117/8) \n" ); document.write( "Directrix: y=29/2 - 1/8 ; y=115/8 \n" ); document.write( "---------------------- \n" ); document.write( " \n" ); document.write( "============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |