document.write( "Question 55110This question is from textbook
\n" );
document.write( ": determine vertex of y=x^2-8x+22\r
\n" );
document.write( "\n" );
document.write( "this is what I did (after lots of hair pulling)\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "y=x^2-8x+22
\n" );
document.write( "y-22=x^2-8x
\n" );
document.write( "y-22+16=x^2-8x+16
\n" );
document.write( "y-22+4=(x-4x)^2
\n" );
document.write( "y-18=(x-4x)^2
\n" );
document.write( "y=(x-4x)^2+18\r
\n" );
document.write( "\n" );
document.write( "answer: (-4,18)\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "Am I on the right track? \n" );
document.write( "
Algebra.Com's Answer #37376 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! determine vertex of y=x^2-8x+22 \n" ); document.write( "You are almost on the right track. \n" ); document.write( "-------------- \n" ); document.write( " y=x^2-8x+22 \n" ); document.write( "x^2-8x+? = y-22+? \n" ); document.write( "x^2-8x+16 = y-22+16 \n" ); document.write( "(x-4)^2 = y-6 \n" ); document.write( "This follows the form (x-h)^2=4p(y-k) \n" ); document.write( "where (h,k) is the vertex. \n" ); document.write( "Vertex is (4,6) \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |