document.write( "Question 31463: 2) For the function y = x^2 - 4x - 5, perform the following tasks:
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document.write( "a) Put the function in the form y = a(x - h)2 + k.
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document.write( "b)What is the line of symmetry?
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document.write( "c) Graph the function using the equation in part a. Explain why it is not necessary to plot points to graph when using y = a (x – h)2 + k.
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document.write( "Show graph here. \r
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document.write( "Explanation of graphing. \r
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document.write( "d) In your own words, describe how this graph compares to the graph of y = x^2?\r
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document.write( "Answer:
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Algebra.Com's Answer #18134 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! a) y=(x^2-4x )-5 \n" ); document.write( "Complete the square: \n" ); document.write( "y=(x^2-4x+4)-5-4 \n" ); document.write( "y=(x-2)^2-9\r \n" ); document.write( "\n" ); document.write( "b)The line of symmetry is x=2\r \n" ); document.write( "\n" ); document.write( "c) Draw the line of symmetry. \n" ); document.write( " When x=2, y=-9; plot the point (2,-9) \n" ); document.write( " That is the vertex of the parabola. \n" ); document.write( " The y=intercept is (0,-5); plot it. \n" ); document.write( " Draw the parabola which opens up.\r \n" ); document.write( "\n" ); document.write( "d) The (x-2) moves y=x^2 two units to the right. \n" ); document.write( " The \"-9\" moves the parabola nine units down.\r \n" ); document.write( "\n" ); document.write( "Stan H.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |