The vertex of a parabola is the highest or lowest point, also known as the maximum or minimum of a parabola. Vertex Properties is the maximum or minimum value of the parabola (see picture below) is the turning point of the parabola the axis of symmetry intersects the vertex (see picture below)

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 the equqation as shown in the diagram and example below:

Finding Vertex from Vertex Form It's called 'vertex form' for a reason! The vertex is just (h, k) from the equation.