Where is the z axis on a Cartesian coordinate? I googled it and some graphs show the Z axis where the Y axis is.:confused:

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- January 6th 2009, 07:59 PMHSS8Cartesian coordinate: Z axis
Where is the z axis on a Cartesian coordinate? I googled it and some graphs show the Z axis where the Y axis is.:confused:

- January 6th 2009, 08:04 PMmr fantastic
- January 7th 2009, 12:15 PMMath Major
The picture above is a good illustration of a 3-dimensional graph. Because we can only draw things in 2-dimensions (normally), we have to sort of use our imaginations and depth tricks with a drawing to create the third axis. In the illustration, the regular x-y graph has been turned sideways and then directed towards the observer, creating the feel that the x-axis is coming out towards you and the y axis rests along the width of the page. The z-axis, then, becomes the axis that runs along the height of the page.