document.write( "Question 170506: x varies directly as the square of s and inversely as t. How does x change when s is doubled? When both s and t are doubled? \n" ); document.write( "
Algebra.Com's Answer #125900 by Mathtut(3670)\"\" \"About 
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remember when a constant like x in our case varies directly with another variable,s squared in our case it takes on this form \"x%2Fs%5E2=k\" and when a constant like x varies indirectly with t it takes on this form xt=k
\n" ); document.write( ": together we have xt/s^2=k or \"x=s%5E2%28k%29%2Ft\"
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\n" ); document.write( "so we have when s is doubled we have \"xt%2F%282s%29%5E2=k\" or \"x=4s%5E2%28k%29%2Ft%29\"meaning x increases by 4 when s is doubled.
\n" ); document.write( ":
\n" ); document.write( "when s and t are doubled we have \"x%282t%29%2F%282s%29%5E2%29=k\"or \"x=2s%5E2%28k%29%2Ft\"
\n" ); document.write( "meaning x doubles when s and t are doubled \n" ); document.write( "
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