There are extra stuff on my y= function

The relational operators (=, >, <, and similar symbols) are available in two places.
If you are trying to draw an inequality graph
Press the Graph Menu,
Press F3:Type
Press F6:> to access other tabs. The 4 inequality symbols are availabe in the following screen.
Press F1:>, F2:< etc. to type in the inequality sign in your inequality.

If you want the relational operators for some other purpose, you can access then in the catalog of commands.
Press Menu
Press 1:Run>Mat to go to the main calculator screen
Press [SHIFT][4] (Catalog] to open the Catalog.
Scroll up or down until you reach the relational operator you want.
Select it and press EXE.

The relational operators (=, >, <, and similar symbols) are available in two places.
If you are trying to draw an inequality graph
Press the Graph Menu,
Press F3:Type
Press F6:> to access other tabs. The 4 inequality symbols are availabe in the following screen.
Press F1:>, F2:< etc. to type in the inequality sign in your inequality.

If you want the relational operators for some other purpose, you can access then in the catalog of commands.
Press Menu
Press 1:Run>Mat to go to the main calculator screen
Press [SHIFT][4] (Catalog] to open the Catalog.
Scroll up or down until you reach the relational operator you want.
Select it and press EXE.

It seems that you are drawing Inequality Graphs.

A. If you are not drawing inequalities, kick the Ineqal application out of memory.

B. If you still want inequality drawing, but just for once want a function graph,

1. you can open the Y= editor. The operation sign (=, less than, less than or equal to,...) will be highlighted in your equation (inequality).
2. Press the [ALPHA] key then press the [Y=] key to select the tab corresponding to the = sign.
   

C. To kick The INEQUAL application from memory,

• Press the [APPS] button.
• In the the new screen display (INEQUAL RUNNING), select [2:Quit Inequal]
• Return to the [Y=] editor screen to make sure that you have function graphs

There isn't one on most keyboards. In fact, I haven't come across one which has an inequality sign!
You can use a word processor for that, or a MS Office program.

One Blink repeating. >>CPU not functional.
Two Blinks repeating.>> BIOS corrupted.
Three Blinks repeating.>>RAM Module Error.
Four Blinks repeating.>> Graphics Card Failure.
Five Blinks repeating.>>Other Systemboard failure.
Six Blinks repeating. >>BIOS authentication failure.

You can use symbols (X,Y,A,B,C,D, and M, =) to create expressions to use in the SOLV program or to generate a table of values.
To type them you use [ALPHA] followed by the symbol you want. The symbols on the body of the calculator are of the same color as the ALPHA key. The [=] in expressions is different from the general = sign at the bottom of the keypad.

Do you want to change from graphing functions to inequalities or the opposite? A complete sentence would help.
I am going to assume that you want to graph y=f(x) functions, but when you opened the Y= editor, you found unusual symbols.
If the is the case, then you must have run the Inequalz Application. It stays in memory and takes over the graphing from the native OS. Inequalz must be unloaded from memory to return control to the native OS.
Here is how to do it.

1. Press the [APPS] key.
2. In the list of Apps find Inequalz.
3. Type the number in the list that corresponds to Inequalz and
   
4. press ENTER
5. The new screen displays INEQUAL RUNNING and 3 choices

• 1:Continue
• 2:Quit Inequal
• About

Press 2:Quit Inequal to unloade the App from memory. Control will revert to the native OS, and you will be able to draw Y= graphs.

Try this...remove the card and battery...press all the buttons...leave it alone for 20 minutes...insert the card and then the battery...turn it on.

ok bottom left hand side of keyboard there is a key with fn on it hold this down along with other blue keys that have like little suns on them this is your brightness keys

ok, your calculator is running the program Inequalz
what you have to do is
go into APPS, go to the program Inequalz, and it will give you options. choose the one that says 'Quit Inequal'

that should work