document.write( "Question 129792: I need help with finding this question\r
\n" ); document.write( "\n" ); document.write( "if x varies directly as t2, and x=63 when t=3. I need to find x when t=6.
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Algebra.Com's Answer #94779 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
I use what is called the \"constant of proportionality\", \"k\"
\n" ); document.write( "I can only do this when things vary DIRECTLY
\n" ); document.write( "\"x+=+k%2At%5E2\"
\n" ); document.write( " x=63 when t=3
\n" ); document.write( "\"63+=+k%2A3%5E2\"
\n" ); document.write( "\"63+=+9k\"
\n" ); document.write( "\"k+=+7\"
\n" ); document.write( "find x when t=6
\n" ); document.write( "\"x+=+7%2A6%5E2\"
\n" ); document.write( "\"x+=+7%2A36\"
\n" ); document.write( "\"x+=+252\" answer
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