Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

2 Answers

Graphing my graphing calculator will not allow me to select two equations to graph - when I use enter to toggle one equation on - the previous equation turns off. Any ideas?

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  • jcf_ensina_m Jan 26, 2008

    In the Equation Editor, when one chooses a second equation, it unselects the other already selected, making impossible to see 2 or more simultaneous graphics.

    I tried fix the problem in Variables / Select On, but it did't work.

    José Carlos F. - [email protected]

  • Anonymous May 01, 2008

    I can/t graph two equations at the same time



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The first solution will allow you to watch your calculator graph two equations simultaneously rather than finishing one before graphing the next; it won't solve the problem of having the calculator unselect one equation when you select a second. To fix that problem, try the following:

In order to select additional graphs, the Transformation Graphing App will need to be uninstalled from the TI-83 Plus Family and TI-84 Plus Family. Uninstalling the App does not erase it from the calculator, it disables it from interfering with the normal graphing modes. Below are the steps to successfully uninstall the App.

  • Press [APPS] key
  • Select Transfrm from the menu
  • Press 1:Uninstall
The illustration and solution are courtesy of Jesse Phillips, who cites this page from the Texas Instruments support site

- doug garfinkel, Children's Day School

Posted on Jan 29, 2008



Go to the graphing Mode fuction a select Simulaneous graphing then exit it and try it again This will cure your problem with it

Posted on Jan 20, 2008


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How do i graph a circle

Use the conics utility
Scroll until you find the equation of a circle and an image, Select it, then enter the coefficients.
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Graph a circle

Use the conics utility
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Will only display one graph at a time

One of the applications Inequalz or Transfrm is still loaded in memory and it controls the graphing capabilities of the calculator. To restore control to the naative OS, proceed as follows.
Press the APPS button.
Scroll dowwn or Up to find Inequalz.
Select it and press ENTER.
A message is displayed sayin Inequal Running.
Select 2:Quit Inequal.

If the message you get is
or Conflicting Apps
Reset the RAM to kick the applications out of memory

Nov 21, 2011 | Texas Instruments TI-84 Plus Calculator

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I'm graphing a quadratic equation, I have all my info put into the stat area and nothing in the Y= area. When I graph it the points are small boxes, there is no graph line and it won't allow me to do any...

If you're doing a stat plot, you're plotting a discrete set of points. The calculator doesn't interpolate between the data points.

If you want to graph a quadratic equation, then do so. Enter it in as a Y= equation and plot it as such. This will not only connect the points (unless you tell it not to), but will also allow you to do things like trace.

Mar 03, 2010 | Texas Instruments TI-83 Plus Calculator

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I cant graph more than one equation at a time, it only allows me to graph one Y value at a time.

A) Before drawing function Y1=f(X), R1=F(Theta), (X1=f(T0, Y1=f(T))
you should turn the statistical plots OFF.
To turn statistical plots off
  1. Press [2nd][Y=] to open the (STAT PLOT) menu.
  2. Select [4:PlotsOff] and
  3. Press [ENTER].
  4. Calculator displays Done
  5. Restart your graphs.
  6. Adjust the window dimensions if necessary or use the ZOOM function to have all graphs displayed.

B) If you cannot draw more than one function

Usually as soon as you start entering an expression in the Y= editor screen, the = sign is highlighted to ensure the drawing of a function. However, if you have previously used the Transfm application to draw dynamic graphs, it takes over the graphing functionalities from the native OS and you can only draw a single graph.
The reason is that dynamic graphing needs one or two parameters that can be changed during the graphing process and the graph redrawn with a new value of a parameter, and you end up with a family of curves differing one from the other by the values of one parameters. But since the calculator has space for 10 graphs at most, only one function can be highlighted.

To make a long story short, you must Uninstall the Transfrm application from memory. The procedure will not erase it, just kick it out of memory.

  1. Press the [Apps] key.
  2. Scroll down or up to reach the Transfmapplication.
  3. Select it and press [ENTER].
  4. If that application was running you will see a new screen that tells you some thing like
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    • 1:Uninstall
    • 2:Continue

    Graphing functionalities will revert to the native OS

Another potential culprit is the Inequalz App. You recognoze that Inequalz is runnibg if the [ Y=] editor screen shows tabs at the bottom

To uninstall it, do as for the Transfm and select the option that will unload it from memory.
  1. Press [Apps]
  2. Select [ : Inequalz]
  3. Screen displays INEQUAL RUNNING
  • [1:Continue]
  • [2:Quit Inequal]
  • 3:About]
Press [2:Quit Inequal]

Feb 17, 2010 | Texas Instruments TI-84 Plus Calculator

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We are graphing more than one line at a time. One

To return your calculator's graphing equation to "Y=", press "MODE" from the home screen, then ensure that the option on the fourth row is set to "Func". Next, to show a hidden graph, access the Y= list, then press the left arrow key until the cursor is over the "=". Press "ENTER" to toggle visibility of that line.

Nov 13, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

Graphing an equation

Press the Y= key to invoke the Y= editor. Enter in your equation.

Press the WINDOW key to set the window parameters.

Press the GRAPH key to have the calculator graph the equation.

For more details and options, see the "Function Graphing" chapter in the Guidebook.

Nov 11, 2009 | Office Equipment & Supplies

1 Answer

I can't graph more than one equation in the y= area of my Ti 84+

The marking that so puzzle you define the type of line (or dots) to represent the graphs. Enter as many functions as there are Y variables.
After entering a function press [ENTER] to jump to the next one.
When finished entering all functions press GRAPH. If you want graphs drawn one after the other, in MODE highlight Sequential (6th line) and press ENTER. If you want graphs drawn simultaneously, in MODE (6th line) highlight Simul and press ENTER. Press 2ND QUIT to return to previous screen . Execute graph again.
Hope itr helps.

Sep 23, 2009 | Texas Instruments TI-83 Plus Silver...

1 Answer


i had the same problem .... just go to apps and go all the way down transfrm and click it then click the uninstall button !!!

Apr 01, 2009 | Texas Instruments TI-84 Plus Calculator

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My calculator will only graph one graph at a time.

This is simple... Back up all RAM, (press second+, then 2, then 1, press enter to back up something if backed up it will have a star by it) Then clear your RAM (pull out your batteries while the calc is still on or press second+, then 7, then 1)
Hope this helps!

Oct 07, 2008 | Texas Instruments TI-84 Plus Calculator

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