document.write( "Question 99283: how do you decide which variablleshould be on the x-axis and which should be on the y-axis \n" ); document.write( "
Algebra.Com's Answer #72254 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
by convention, the independent variable is on the horizontal (x) axis\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "and the dependent variable is on the vertical (y) axis\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "the cost of a chain depends on the length of the chain, so the length would be the x value and the cost would be the y value
\n" ); document.write( "
\n" );