Question about Texas Instruments TI-84 Plus Calculator

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TI 84 will not graph multiple functions simultaneously

I have had the TI84 for more than a year. Recently, it stopped graphing completely because somehow the PLOT 1 PLOT 2 PLOT 3 at the top of the function (Y =) screen were highlighted. Now I can get one fuction at a time....anyone know how to make the TI84 graph multiple functions simultaneously?

Already tried highlighting multiple functions (and only one equal sign will highlight at a time) and already reset Mode to SIMUL. Have also tried changing the line type at the far left of the effect.

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  • 3 more comments 
  • deroches Sep 11, 2008

    can't graph multiple functions

  • lrascal2001 Sep 13, 2008 fixed it

  • Jay2k3131313 Apr 07, 2009

    my problem is the same but i tried dele that file but the file will nto dele i need help i need this problem fixed by tomorrow moring

  • cf_scantland Apr 07, 2009

    Evidently my transfrm apps has already been accidently activated. When I hit the apps and then transfrm, my calculator automatically launches a program over areas of polygons. The option to uninstall or continue isn't even an option. (This is the advice every site seems to offer me to uninstall the program. I need to uninstall it because it is causing difficulties in my graphing abilities.) HELP!
    Even the Texas instrument site offers nothing for my problem.

  • ccescott
    ccescott Dec 11, 2012



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  • 32 Answers

Turn off transformers. Go to apps and go all the way down until you reach transformers then hit enter. Then a menu should appear and hit uninstall that should fix it.

Posted on Sep 13, 2008

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1 Answer

My TI-84 Plus won't let me graph trigonometric functions.

Is it somehow preventing you from graphing, or are you simply not getting the graph you expect?

Most likely you have the angular mode set wrong. You probably want it set to radians. Press MODE, move to the third line, highlight RADIAN, press ENTER, then 2ND [QUIT].

If it's not the angular mode, please reply to this post and give an example or two.

Mar 22, 2013 | Texas Instruments TI-84 Plus Calculator

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How do i find slope and then graph it

Select two points P1 and P2 on the line. Read their coordinates P1(X_1, Y_1), and P2(X_2, Y_2). If the points are given to you that is even better: you will not have to approximate their coordinates.
The slope of the straight line that passes through P1 and P2 is the ratio s=(Y_2-Y_1)/(X_2-X_1).
A slope is a number and cannot be graphed. The line that has the slope can be graphed if you have its complete equation y=slope*x + initial value.
To graph a curve on the TI84 open the Y= editor, type in the second member (right side) of the function say on line Y1= then press the Graph function key.

Feb 05, 2013 | Texas Instruments TI-84 Plus Calculator

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How do I get more than one graph to graph? The calculator is stopping me from turning more than one graph on.

After entering the first function to graph press the down arrow and when the cursor blinks after Y2 type in the second function you wish to graph. After you finished entering multiple functions make sure the graph setting under the window button are set correctly so every function will be visible at the interval you set. After that you hit Graph and you should see your graphs being plotted.

I hope it helps.

Mar 15, 2011 | Texas Instruments TI-84 Plus Calculator

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Cannot graph multiple functions on the TI84. It only graph y1 and not the subsequent functions.

It is likely that you used the Transfrm Application previously. It remains in memory and takes over the graphing duties of the native OS. It must be kicked 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 25, 2010 | Texas Instruments TI-84 Plus Calculator

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Can't graph multiple functions

You have used the TRansfrm application. It remains in memory and takes over the graphing responsibilities from the native OS. You must kick it out of RAM (No, that will not delete it from the calculator).
  1. Press [APPS]
  2. Scroll along the list of APPS
  3. Find TRansfrm and point to it.
  4. Press [ENTER]
  5. Select the Uninstall option.
  6. Open the [Y=] function editor and type in the functions (up to 10)
  7. Press Graph.

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My TI--84 plus calculator won't display the 7 graph modes, and it won't graph equations simultaneously. What is wrong? I can only get an arrow icon and an arrow-bar icon.

Use the [Y=] entry screen to enter the functions you want to graph. Make sure that the = sign after Y1, Y2 etc. is highlighted (black). If the = sign is not highlighted the corresponding function will not be drawn. You can can up to 10 functions, but what is the point of drawing so many if they overlap?
Anyway, to change the graph style of the curve for a particular function, use arrows to move to the line, then use left arrow to the bit of line that appears to the left of the Y. Highlight the segment an press ENTER. Each time you press ENTER the style changes to another one. Beware of the unconnected bubble style. During the drawing it will show the position of the point being drawn, but at the end, the whole curve, so to speak, evaporates.
As to simultaneous graphs, if it is important to you to have the graphs drawn for all the curves at the same time, you can enforce that by pressing [MODE], and using down arrow to reach the 6th line Sequential Simul. Use the right arrow to highlight Simul and press ENTER.
Whether drawn sequentially or simultaneously, all graphs will be displayed, except for the ones with the unconnected bubble as style.

Hope it helps.

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I use one of the graphing APPS or do through a program. I have a users manual for TI 84 silver Edition that shows you how to archive\ unarchive to run programs here at this site. Usually, I tell people to just forget about the programs and use the simple concepts so, that they could operate their calculator better. But, if you notice in those program are actually more powerful than the programs you get on the web, because I wrote them to be flawless, or I only used programs that I knew would not clash and were very well written. Won't y1=(2/5)x-(11/5) and -3x+8 work?

y1=(2/5)x-(11/5) and -3x+8

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Hi, you can try uninstalling the transformation app in your calculator. This does not really uninstall your application, it only prevents it from interfering with it. You should be able to graph multiple functions after that.

1) Go to APPS
2) Press Transfrm
3) Click Uninstall

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Try pressing the "On" button a couple times. That should work

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