First form of the parabola, Algebra

Let's go through first form of the parabola.

                    f ( x ) = a ( x - h )2  + k

There are two pieces of information regarding the parabola which we can instantly get from this function.  First, if a is +ve then the parabola will open up and if a is +ve then the parabola will open down. Second, the vertex of the parabola is the point ( h, k ) .  Be very careful with signs while getting the vertex here.

So, while we are lucky sufficient to have this form of the parabola we are given the vertex for free.

Posted Date: 4/8/2013 1:34:23 AM | Location : United States

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