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The geometric shape of parametric equations

  1. Dec 23, 2014 #1
    Hello everyone, I have another question mark buzzing inside my head.

    After the elimination steps of a matrix, I'm having some problems about imagining in 3D.

    For example, x=t , y=2t, z=3t what it shows us?

    Or, x=t+2, y=t,,z=t ?
    Or another examples you can think of. ( Complicated ones of course)

    Thank you.
  2. jcsd
  3. Dec 23, 2014 #2


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    2017 Award

    Staff: Mentor

    Plug in t=0, t=1, t=2 and see what you get, that should help.
    If possible, you can also solve one of the equations for t and plug it into the other two equations then you get y(x), z(x) or similar.

    If all three equations are linear, the result is always a straight line.
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