document.write( "Question 430405: Find the x-intercepts and the y-intercepts for f(x).\r
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document.write( "f(x)= x^2-9x+9\r
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document.write( "Thank you \n" );
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Algebra.Com's Answer #298939 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Find the x-intercepts and the y-intercepts for f(x). \n" ); document.write( "f(x)= x^2-9x+9 \n" ); document.write( ".. \n" ); document.write( "Two rules to remember: \n" ); document.write( " 1)To find the y-intercept, set x=0, then solve for y. \n" ); document.write( " 2)To find the x-intercept, set y=0, then solve for x. \n" ); document.write( "..\r \n" ); document.write( "\n" ); document.write( "Finding y-intercept, set x=0 \n" ); document.write( "y-intercept=0-0+9=9 (ans) \n" ); document.write( ".. \n" ); document.write( "Finding x-intercept, set y=0 \n" ); document.write( "0=x^2-9x+9 \n" ); document.write( "solve by quadratic formula below: \n" ); document.write( ".. \n" ); document.write( " \n" ); document.write( ".. \n" ); document.write( "a=1, b=-9, c=9 \n" ); document.write( "x=[-(-9)+-sqrt(81-4*1*9)]/2 \n" ); document.write( "x=(9+-sqrt(45))/2 \n" ); document.write( "x=(9+-6.7)/2 \n" ); document.write( "x=15.7/2 or 2.3/2 \n" ); document.write( "x=7.85 or 1.15 (ans) \n" ); document.write( " |