Review Presentation: Parametric Equations

Parametric equations consist of the variables, t, x, and y. When doing a parametric equation, we must remember that we must create a table, a graph, and then finally eliminate the parameter.

When making a table, we must use t, x, y. We can plug in any variable as long as we include negatives as well as positives. I usually use -2, -1, 0, 1, and 2. Once we place these numbers into our table, we simply plug them into the equation which is how we will get our x and y values. The next step is to plot the points onto the graph, and placing t = (number) near the point. This is when you will get a curve. 

The last thing you must do is eliminate the parameter. In the x equation, you must solve for t. And then plug t into the y equation, which is how you will eliminate the parameter. And that's how you do it!