Have you ever thought of how to graph in three dimensions? The
To get ready for graphing parametric equations in three dimensions, complete the following problems.
- and - axes in the plane.
On your paper, mark the points with coordinates
Now imagine the
-axis going up from the origin. Why is the point with the 3-dimensional coordinate one of those you have already marked?
Place the tip of your pencil at the location where the points
, , , and would be.
One of the points in part (d) was below the paper. Which one?