The document discusses key properties of parabolas in vertex form, including: 1) The vertex form equation y = a(x - h)2 + k, where the vertex is located at the point (h, k). 2) The line of symmetry is given by x = h or y = k, depending on the form of the equation. 3) Examples are given of parabolas graphed from vertex form equations, with the vertex and axis of symmetry identified.