document.write( "Question 1155913: If y varies as directly as the square of x , and y =75/8 when x =5 ,find y when x =2 \n" ); document.write( "
Algebra.Com's Answer #778632 by josgarithmetic(39617)\"\" \"About 
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y varies as directly as the square of x ,\"y=kx%5E2\"\r
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\n" ); document.write( "\n" ); document.write( " y =75/8 when x =5, \"75%2F8=k%2A5%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"k=75%2F%288%2A25%29\"\r
\n" ); document.write( "\n" ); document.write( "\"k=3%2F8\"\r
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\n" ); document.write( "\n" ); document.write( "The model equation is \"highlight_green%28y=%283%2F8%29x%5E2%29\".\r
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\n" ); document.write( "\n" ); document.write( "find y when x =2.\r
\n" ); document.write( "\n" ); document.write( "\"y=%283%2F8%29%2A2%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"y=3%2A4%2F%282%2A4%29\"\r
\n" ); document.write( "\n" ); document.write( "\"y=3%2F2\", \"done\".
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