All Posts Tagged Tag: ‘graphing’

How Do I Find the Focus of a Parabola?

This is a common question that we get from two audiences. It is most commonly asked by algebra students who want to calculate the point in the plane, when the equation of the parabola is given. More advanced students sometimes must prove this formula from the definition of the focus. We will handle this scenario second. We have also included …

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Finding the Vertex, Focus, and Directrix of a Parabola Given in Standard Form


Watch two things in these types of problems. First, the geometry of the situation — i.e. the orientation of the parabola and its various parts; and second, make sure your formulas are properly applied, as there are many k’s, p’s and a’s floating around and are a lot to contend with. SEE ALSO: How to find the directrix of a …

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