# Maths - Parametric Equations

> Source: https://ollybritton.com/notes/a-level/maths/topics/parametic-equations/ · Updated: 2021-10-05 · Tags: maths, year-2, school, safe-to-post-online

## Flashcards
##### What is a parametric equation??
An equation where $x$ and $y$ are defined in terms of a parameter $t$.

##### How do you work out points for a parametric curve??
Plug in a value for $t$ and see what co-ordinate $(x, y)$ it generates.

##### How can you convert a parametric curve to a Cartesian one??
Rearrange $x$ or $y$ to $t = ...$ and then substitute.

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