Properties of the Vertex of a Parabola
- is the maximum or minimum value of the parabola (see picture below)
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- is the turning point of the parabola
- the axis of symmetry intersects the vertex (see picture below)
![Picture of vertex and axis]()
How to find the vertex
Depends on whether the equation is in vertex or standard form
Finding Vertex from Standard Form
The x-coordinate of the vertex can be found by the formula $$ \frac{-b}{2a}$$, and to get the y value of the vertex, just substitute $$ \frac{-b}{2a}$$, into the
Finding Vertex from Vertex Form
It's called 'vertex form' for a reason!
The vertex is just (h,k) from the equation.
