Question about Texas Instruments TI-84 Plus Calculator

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Graphing issue Hello, when i press my y= button there is a weird symbol on the very left of the screen before each y1, y2 etc. The symbol looks like a triangle and a bar >| kinda like that, and i use to be able to graph more than one y= line and now i can only select one. Thanks Erin

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  • Anonymous Mar 26, 2014

    There is a triangle pointing to the right and a vertical line next to it to the left of Y1=


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Damn dude i had the same problem, after a while searching for something that can put this problem away i've finnaly found the way \o/! Try APPS->TRANSFRM-> UNNINSTALL! Hope u can make it!


Posted on Jun 21, 2008

I had the exact same problem.  frederico339's solution fixed it.  Thanks!!!

Posted on Nov 04, 2008

Federico339 is right

Posted on Oct 23, 2008

Frederico339 is correct.

Posted on Aug 27, 2008

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Hey Math N3rd
Try this hit y= then go left this allows you to change the settings of your graph. Keep on hitting enter till you get to a strait line. This should help. If it doesn't just try to reset your caclulator, 2nd then + then 7 then 1 then 2. HOpes this helps good luck

Posted on Feb 04, 2008

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I am trying to help one of my students with their calculator. When graphing multiple equations on her TI-84 plus calculator only one graph is appearing in the window. There is a symbol to the left of the...

The Transfrm application has been executed previously. It remains in RAM and takes over the graphing duties of the native OS. You must Uninstall Transfrm (that does not mean delete it, just unload it from memory).
To do so,
  1. press the [APPS] button.
  2. Use arrow Up or Down (Up is faster) to reach Transfm.
  3. Select it and press [ENTER].
  4. In the new screen, select the number to the left of the Uninstall option.
  5. Go to draw your graphs. You will be able to draw up to 10 graphs.

Feb 04, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

When going into Y= (top left button) and inserting a function into Y1 and Y2 I am not able to view them both at the same time when i select graph. (Back to the Y= screen) Next to Y1 there is a symbol that...

Some time or othefr you played with the Transfrm Application. It remains in memory and takes over the graphing capabilities of the native OS. You must kick it out of memory.

  1. Press [APPS]
  2. Use Up or Down arrows (Up is faster) to get to the bottom of the APPS list.
  3. Locate [:Transfrm], highlight it and press [ENTER]
  4. In subsequent screen, select the [UNINSTALL] option.
  5. Go back to the [Y=] screen and enter or edit your functions.
  6. Press [GRAPH] when finished entering the functions.

Oct 04, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

My calc can only display one function on the graph part at a time, and has a strange icon beside the Y1 ,Y2,...etc it looks like an arrow. How do i get it back to normal?

At some time or other you executed the Transfrm Application. I remains in ram and takes over the graphing duties from the native OS. You must unload it from memory. Do not worry this will not delete it.
To unload it from RAM
  1. Press the APPS button.
  2. In the list of APPS look for Transfm. You will have to scroll down or Up (faster) to get to it.
  3. Select it and press [ENTER]
  4. A new screen is displayed inviting you to Uninstall or Continue.
  5. Press the number key corresponding to Uninstall.
Return to the [Y=] function editor to type in the functions to graph. Make sure that the = signs after the Y1,Y2, are highlighted. If one of them is not highlighted, move cursor on = and press ENTER

Sep 16, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

When i press Y= button and graph quadratic equations the graphs are not accurate i realized that the symbols to the left of Y1 Y2 Y3... Are different they are no longer lines greater than less than etc....

In the Y= editor, scroll down to the equation in question. Press left-arrow until the cursor goes over the symbol. Press ENTER repeatedly to cycle through the various graphing options.

Jun 24, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

Problem graphing..

This is my last post. It seems that I squanderd my time for zilch. There is a simple way to reset the defaults or the RAM. I stopped suggesting it because ..(what is the point?).
Press [2nd][MEM][7:Reset][1:All Ram][2:Yes] [ENTER]. Message RAM cleared is displayed on screen. Press [CLEAR] key. Screen should clear the message.
If that does not solve your problem..

Oct 06, 2009 | Texas Instruments TI-83 Plus Silver...

1 Answer

Were working on functions in my calculus class, and i was wondering how do you get Y1 into an equation to stand for f(x)?

If I understand correctly you want to use the graph function Y1, or Y2, an equation. In the [RUN] screen press [VARS][F4:GRPH][F1:Y]. It echoes on the screen as Y. Press 1 and you have Y1.
However, you will not be able to manipulate it symbolically, because that variable contains the value of Y1 for X=0, if you have not drawn it yet. or tha value of Y1 for the last X used to draw the graph Y1=f(X).
The calculator is not capable of manipulating symbolic expressions. what you want it to do is beyond its capabilities.

Hope it helps.

Sep 16, 2009 | Casio FX-9750GPlus Calculator

1 Answer

How can I get my calculator to highlight more than one function, to graph a circle for example?


Suppose you want to draw the circle the equation of which is X^2+Y^2=4, a circle centered at the origin with radius 2.
When you isolate Y^2 and then extarct the squre root you obtain two solutions, call them Y1 and Y2
Y1=SQRT(4-X^2), Y2= -SQRT(4-X^2)
You press[Y=] and type in the right hand side of the equations above, one in Y1= and the other in Y2. Press [GRAPH].

Ih a graphic does not appear within the scree window adjust the window parameters ( [WINDOW]) or Press [ZOOM] and select ZoomIn, ZoomOut, ZoomSTD, etc.

Explore the program Draw accessible by pressing [2nd][DRAW].

Hope it helps

Sep 04, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

I can't find how to graph absolute value function.

Here how you do it taking as exemples y1=x^3 -5 and y2=abs(x^3-5)
Turn calculator ON by pressing [AC/On] . Use arrows to select [Graph] icon and press [EXE]
On line Y1= enter X[^]3 -5 [EXE]
On line Y2= press [OPTN] [F5:NUM][F1:abs] [(] X [^]3 -5 [)] [EXE]
The graphs will be drawn one after the other. You might have to adjust the window limits.
Here is an ouput drawn on another calculator.
For negative values of the x-variable, Y1 has negative values, while in the same range, Y2 has positive values, equal and opposite to those of Y1. In that range, Y1 and Y2 are symetric of each other with respect to the X axis.
For positive values of the x-variable, Y1 and Y2 are identical.

Hope it helps

Jan 30, 2009 | Casio CFX-9850G Plus Calculator

1 Answer

Plotting two graphs

Go into the Y= editor by pressing the Y= key. Select a function, then press the left-arrow a couple of times. Now press ENTER and see whether the symbol on the far left changes. If so, you've just changed the function style. Press ENTER repeatedly to select the function style. Your choices are Line, Thick, Above, Below, Path, Animate, and Dot.

Nov 21, 2008 | Texas Instruments TI-84 Plus Calculator

1 Answer


Arrow to the left of the Y= until you have highlighted the triangle, and press enter until you see what you are looking for. The triangle you are referring to is probably to graph an inequality and I think you are looking for a regular line.

Jan 28, 2008 | Texas Instruments TI-84 Plus Calculator

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