If you ever delete a LIST when trying to clear a LIST column, follow these instructions to re-insert the list you deleted.
First, check your STAT area to be sure the list is deleted. Press the following keys:
Now, check your LIST to be sure that the missing column has returned:
To graph equations in Y=, you will usually need to turn off the PLOT window of your calculator. This is not ALWAYS the case. If you are graphing data AND the equation that models that data, then you need to leave your PLOT on.
However, if you are trying to graph an equation not related to any data and you get an INVALID DIM error, follow these steps to turn your PLOT off:
First, Press the Y= button to access the equation area. If your screen looks like this, your PLOT is turned on.
Follow these keystrokes to turn your PLOT off:
To graph data that is entered in your lists (L1, L2, etc…), you will need to turn on the PLOT window of your calculator. Follow these steps to do so.
First, Press the Y= button to access the equation area. If your screen looks like this, your PLOT is turned off.
Follow these keystrokes to turn your PLOT on:
If you are trying to graph on your TI83/84 and you get the INVALID DIM error, then this usually means your PLOT is turned on. Follow the steps below to turn off your PLOT and see if the problem is fixed.
Here is what your screen looks like with the error:
Related Post: Turn PLOT on