Parametric Equations

Parametric
These can be entered in a similar way to coordinates, you can then edit the domain.

parametric-eqns-2

Select image for graph page on Desmos

The sliders feature can be used too, for example try this graph of a circle given in terms of its parametric equations. Selecting the slider allows editing, for example as here it is possible to set the interval so that only integer values are possible.

parametric-eqns-3

Select image for graph on Desmos

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