![](https://i0.wp.com/whatifmath.org/wp-content/uploads/2017/04/Parametric-Equations-Projectile-Motion.gif?fit=249%2C280&ssl=1)
Parametric equations are powerful tools to model projectile motions and to graph things that are not functions like circle or ellipses. The x and y coordinates are defined as two separate functions with a common independent variable often labelled “t”.