Alternative to
@Mark44 's fine suggestion:
You could use the "DrawInv" function.
To do this, suppose you have Y
1=X^3 as a function to be graphed.
Go to the main screen.
To graph the in verse of Y
1, you will need to have your display screen show: "DrawInv Y
1".
If you know how to do this, fine. Press "ENTER".
Else:
Go to the "DRAW" menu: (2nd - PRGM) and pick item 8, which is DrawInv .
Next: Look under "VARS", you need the ""Y-VARS" option. The first option under that is "Function ... ", which you should choose, then click on "Y1". (or whatever YN is relevant)
The main screen should show:
DrawInv Y1
Press "ENTER".
This will give the graph of X = Y
3.
It may also show the graph of Y = X
3, depending upon whether or not Y
1=X^3 is activated in the list of functions to be graphed.