You can probably think of many examples: a thrown ball or a stone thrown from a trebuchet. In the formula, subtract the values in the parentheses. It is important to note that this is conceptually VERY different from a change of coordinates. We can write the linear pairs of angles equal to 180 degrees to solve the equations. x^ {\msquare} Design by : styleshout | Be sure also to check the parabola calculator to learn more about such a curve from a mathematical point of view.