Sometimes you just need to make a graph. If your TI-84 isn’t handy, Desmos Graphing Calculator is a good backup to have. The app accepts both functions and tables of x and y values as inputs and ...

The Desmos calculator is more advanced than the TI-84 or other devices, offering a friendlier interface, live graphing updates, and free access via a smartphone, tablet or any other connected device.

The district also encourages teachers to use Desmos online calculators since these are used on state assessments as well. Best tip: Ask before you buy.