[list][*]Cartesian (2D, 3D) and Polar coordinate systems [br][/*][*]Functions, equations, points[br][/*][*]Highlights intersections,  intercepts, roots[br][/*][*]Add images, text[br][/*][*]Use a table to insert points[br][/*][*]Constructions, lines, measurements[br][/*][*]Tools[br][/*][list][*]Points[br][/*][*]Sliders[br][/*][*]Extremum, intersects, roots[br][/*][*]Line of best fit[br][/*][/list][/list]

Many of the applets and activities in Geogebra use its graphing feature. Here is one by [url=https://www.geogebra.org/u/stevephelps]Steve Phelps[/url]!