If it has been a while since you’ve dealt with quadratic functions, this should help you get back up to speed.
These are regular webpages:
- Quadratic Functions: Summary – a summary of the terminolgy and the most useful points needed for solving problems
- Quadratic Functions: Five Main Features – the main features you need in order to draw a sketch and answer most questions that will be asked about a quadratic function (If you are only going to read one page on quadratics, this is the one you most need.)
- Quadratic Functions: Completing the Square – explains how to convert an equation from the standard to the vertex format
These are printable scanned versions that I wrote out by hand: