document.write( "Question 365215: If a quadratic function has its vertex at point (2,8) and the function passes through point (8,6), what is a,h, and k when written in vertex form if the function is f(x)=a(x-h)^2+k. \n" ); document.write( "

Algebra.Com's Answer #260395 by Edwin McCravy(20056) $\"\"$ $\"About$

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If a quadratic function has its vertex at point (2,8) and the function passes through point (8,6), what is a,h, and k when written in vertex form if the function is $\"%22f%28x%29%22=a%28x-h%29%5E2%2Bk\"$ .
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document.write( "Since it has vertex (h,k) = (2,8), \r\n" );
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document.write( "h = 2 and k = 8.  That's 2/3rds of what you asked for!  All you\r\n" );
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document.write( "need is \"a\".\r\n" );
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document.write( "Since f(x) is the same as y, let's write it:\r\n" );
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document.write( "Since it goes through (8,6) we substitute 8 for x, and 6 for y\r\n" );
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document.write( "Now to check let's draw the graph of\r\n" );
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document.write( "Edwin

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