This 4-page reference guide to using a TI-84 Plus to find zeros, vertex/minima/maxima, y-intercept, and increasing or decreasing intervals for either quadratic or polynomial functions can be printed as posters, handouts, or as a half-page interactive notebook printout for students to paste into their notebooks. It can also be shared digitally. The step-by-step instructions include screen images from the TI-84 Plus CE, images of the buttons to push, and detailed written instructions with explan