Graphing Quadratic Functions (Vertex Form)

If the vertex and one other point on the graph of a parabola are known, you can write the equation of the parabola in vertex form.

 

Click on the "New Vertex and Point" button below to generate random points.

 

Vertex: (x, y) \quad Point: (x, y)

 

 


Calculate a value for a, then substitute your values for a, h and k into the form below.

 

f(x) = (x - )^2 +

 

 


 

 

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