Learn how to eliminate the parameter and identify the rectangular graph

Learn how to eliminate the parameter in a parametric equation. A parametric equation is a set of equations that express a set of quantities as explicit functions of a number of independent variables, known as parameters. Eliminating the parameter allows us to write parametric equation in rectangular form. To eliminate the parameter, we solve for the parameter and substitute for the parameter in the equations or we can express the parameter in terms of an identity.

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[anthonyparker]

you are saving my pre cal grade right now

[sheancrane]

Thanks for this Brian, this was a great refresher! Love the sense of humor you have with your class! :D

[ThomYoda]

If x=2-t^2 and y=3t would it be ok if you made the function in terms of x? (x=2-(y/3)^2) RATHER than putting it as Y= ?

[eng-firas]

Q: how can I knew wich T I must solve for?