for example

lei_xiaowen — Wed, 30 Dec 2009 15:37:48 Z

what I do is in addition

maybe it is uesful for youView 13857_Q1.mw on MapleNet or Download 13857_Q1.mw
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parametric plot

Doug Meade — Wed, 30 Dec 2009 19:55:03 Z

What you describe is a parametric plot. Here's how I would do it:

x := t->3*t^3;
y := t->4*x(t)+5;

plot( [x(t),y(t),t=-6..6] );

Note that this is correct. Your equations describe the straight line with slope 4 and y-intercept 5, from x=-648 to x=648.

Doug

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MaplePrimes - answers and comments on Question, How to plot two functions versus each other

for example

parametric plot