Precal S2 Day 36 Plane Curves & Parametric Models.notebook2March 01, 2018Parametric Functions & Plane CurvesLast time, we defined parametric equations as a pair of functions forxandygiven in terms of the parametert.To change an equation from parametric form to rectangular form:•Solve the simpler equation fort(if you can't tell which is simpler, justuse thexequation)•Substitute the result for thetin the other equation•Simplify (and isolateyif possible)There are usually multiple ways to write a pair of parametric equations fora given rectangular equation. The simplest way to write a pair ofparametric equations for a function ofyin terms ofxis to make oneequationx=t, and then substitutetforx