document.write( "Question 94165: If y varies directly with x, and y = 500 when x = 200, find the constant of variation k. \n" ); document.write( "

Algebra.Com's Answer #68730 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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\"If y varies directly with x,\"
\n" ); document.write( "y = x*k
\n" ); document.write( ":
\n" ); document.write( "\"and y = 500 when x = 200, find the constant of variation k.\"
\n" ); document.write( "Substitute for y and x:
\n" ); document.write( "500 = 200k
\n" ); document.write( "k = 500/200
\n" ); document.write( "k = 2.5
\n" ); document.write( ":
\n" ); document.write( "Check:
\n" ); document.write( "y = 2.5(200)
\n" ); document.write( "y = 500 \n" ); document.write( "

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