On my Y= menu, Y1 has a greater than or equal to sign instead of = also, at the bottom of my screen an equals sign, a less than or equal to, a greater than, and a greater than or equal to, are lined up

In mathematics, if there are 2 numbers being looked at as an inequality, the greater-than symbol usually goes in between the two and symbolizes that the first number is greater than the second number (For example: 4 > 2, or 102 > 100).

Greater-than sign - Wikipedia

https://en.wikipedia.org/wiki/Greater-than_sign greater than less than or equal than Google Search

The equal sign of the TI83/84/Plus is a relational operator like less than , greater than, less than or equal to) You use it when you are testing if two values (numbers, expressions, or matrices) are equal.
For example, if in one your programs what you do at a certain time depends on the equality of two expressions, you test the equality by a statement :
If A=B do this action.

Somebody went to the APPS menu, scrolled down or up to reach an applications called INEQUALZ. When executed it remains in memory until it is kicked out. Do the same operation as described above and press INEQAULZ. In the subsequent screen select the option that says Uninstall or quit Inequalz.

Press 2nd [TEST] to bring up the test menu.

It seems to have botched your sign before the =3 but lets say that you used "less than" or equal to 3.
(if you used Greater Than, then simply replace "less than" with "greater than" in the example here)

The easiest thing to do is subtract 1/2 no matter what and then say if month is less than or equal to 3 then add 1.
this way, if the month is NOT less or equal to 3, it has already subtracted 1/2, satisfying the "if not" part.
If the month IS less or equal, it adds 1 which compensates for the 1/2 we already subtracted, plus another 1/2 giving an end result of plus 1/2.

This makes it a simple, single if statement that is satisfied in the other direction without having to overcomplicate the issue.

You, or someone else played with INEQALZ (inequalty graphing) applications. The problem is thet it remains in memory and takes over the graphing duties from the native OS. If you do not want Inequalz to manage the graphing, just kick it out of memory.
Press [APPS¨] key.
Use arrows to scroll through the list of APPS.
Locate INEQALZ and highlight it.
Press [ENTER]
In the new screen INEQALZ RUNNING, press the number that corresponds to the option Uninstall.

If you are running the Inequalz application, you can access the menu tabs at the bottom of screen by pressing the [ALPHA] key. Thus pressing [ALPHA] [Y=] in [Y=] editor puts an [=] sign after the Y-variable.

Hi,
First let us repair the terminology.

1. You can evaluate any expression (find the value of any expression for a particular value of its variable).Store a value in the variable, say X. Key in the expression and press [EXE].
2. You can consider your expression(should not contain a relational operator such as =, greater than, less than, greater than or equal to, less than or equal to) to be a function Y1(x) = expression and graph it, or generate a table for it. You will have several values of the function calculated at various points.
3. You can set your expression equal to 0 and find the particular value(s) of the variable (the unknown) that make the equality TRUE. That is called solving an equation.

I am not sure that it has a solver (solving an equation or an inequation) but you can always draw your expression as a function and explore the graph (SKTCH) to locate the roots (or zeros) of the functions (the values of the variable where the function equals zero.) That is called solving graphically.

Hope it helps.
Thank you for using FixYa and for rating this solution.

Hello,
To enter the inequation you split it into two inequalities

Graph is as follows

Use [2nd][CATALOG] to access the relaional operators less than or equal, greater than or equal, and the operator AND.
To access the inequality signs scroll upwards from abs( to reach the bottom of the catalog.
Note: You can use t as variable only in parametric graphs. Use x.
Hope it helps.

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