A TI-89 calculator is a graphing calculator made by Texas Instruments. It is commonly used in high school and college math and science classes.
To use a TI-89 calculator, you will need to first familiarize yourself with the buttons and functions. You can find tutorials and user manuals online or ask your teacher for guidance. You can also refer to the calculator's built-in help function for specific instructions.
To graph on a TI-89 calculator, you will need to enter the equation or data points you want to plot and then press the "graph" button. You can also adjust the window settings to change the scale and range of the graph.
It depends on the specific test and its rules. Some standardized tests allow the use of a TI-89 calculator, while others do not. It is best to check with the test administrator or the test's website for a list of approved calculators.
To reset your TI-89 calculator, you can press the "2nd" button and then the "MEM" button. From there, you can select "Reset" and follow the prompts. Keep in mind that this will erase all data and settings on your calculator, so use this option with caution.