document.write( "Question 390108: 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 #276557 by robertb(5830) $\"\"$ $\"About$

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$\"x+=+%28ks%5E2%29%2Ft\"$ , where k is the constant of proportionality. Then
\n" ); document.write( " $\"x+=+%28k%282s%29%5E2%29%2Ft+=+4%28%28ks%5E2%29%2Ft%29\"$ . So the value of x is quadrupled when s is doubled.
\n" ); document.write( " $\"x+=+%28k%282s%29%5E2%29%2F%282t%29+=+2%28%28ks%5E2%29%2Ft%29\"$ . So the value of x is doubled when both s and t are doubled. \n" ); document.write( "

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