Identify the values of a b and c. The variables h and k are the coordinates of the parabolas vertex. 1 line of symmetry.
The vertex form of a quadratic equation is given by y a x - h2 k where h k is the vertex of the parabola.
The graphs of quadratic equations are parabolas. In the vertex form y ax - h2 k. To change a quadratic to vertex form we change it to a perfect square with a little extra. Solving Quadratics by Completing the Square.