Identifying Key Features of Quadratic Functions

This video describes how to find key features of any quadratic function, such as a vertex, an axis of symmetry, and x-intercepts.
The vertex is the lowest or highest point of the quadratic, and the axis of symmetry is a vertical line that goes through the vertex.
All Quadratics always have a y-intercept, but they do not always have an x-intercept, which is where a quadratic crosses the x-axis.

I use a TI-NSPIRE graphing calculator to find the key points of interest.