C4: Parametric Equations

C4: Parametric Equations

1. A parametric equation is written in the form x=4t+2, y=t-6. Working out x and y with the same value of t.

2. In order to change a parametric equation into a carteasian equation (in format: y=mx+c in a sense) you have to make t the subject in the x equation and then substitute it into the y equation.

3. When finding the point of intersection between a parametric equation and a carteasian equation you need to replace the x and y in the carteasian equation with the corresponding parametric equation.