Question about Texas Instruments TI-84 Plus Calculator

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When i hit the y= button, it says "ERR: INVALID" and i cant fuigure out whats wrong.

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If you got the message while trying to draw a graph

  1. Press [2nd][Y=] (STAT PLOT)
  2. Choose option [4:PlotsOff][ENTER]. Screen displays Done
If message popped up while doing something else that involves lists or matrices, the length of lists may be different, or the dimensions of matrices may not be compatible.

To Clear the lists:
  1. Press [2nd][0] (CATALOG)
  2. Press [PGRM] (C) to jump to first command that starts with c.
  3. Use arrow to scroll down to ClrAllLists, select it [ENTER]
  4. Calculator displays Done
  5. Start the new problem.
To reset the Ram press [2nd][ ] (MEM) [7:Reset][1:All Ram][2:Reset]. Press [CLEAR] to erase the Ram Cleared message.

When the RAM is cleared, the calculator is reset. The calculator resets itself after a battery change.

Posted on Sep 01, 2010


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I was having the same problem. Whenever I hit the graph button after a linear function was entered in Y1 I would get a screen that said "ERR: INVALID DIM 1:Quit"
I messed with a lot of settings but ended up returning settings back to default. The thing that fixed the calculator's ability to graph was UN-highlighting the Plot1, Plot2, and Plot3 words. If they are white on black they are highlighted. If the words are black then they are UN-highlighted.
To UN-highlight Plot1, Plot2, Plot3, do this: move the cursor up to the highlighted Plot1 and hit "enter." Notice the difference? Now do the same to the others and see if it fixes your problem like it fixed mine.
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Why do I get an ERR: Invalid Dim 1:Quit Whenever I hit the graph key?

You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

If this doesn't do it, could you post the exact function you're trying to graph?

Nov 16, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

I hit the y= button and then just put on 2x+8 and hit graph and then it will read err:invalid dim

Correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

Oct 28, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Getting ERR: INVALID DIM when pressing the Graph button

If the message appears when you try to graph functions deactivate the statistical plots. To do so:

Press [2nd][Y=] to access (STAT PLOTs)
Select [4:PlotsOff] then [ENTER]

That should solve your problem. Post a comment to this thread if you still have trouble graphing.If the message appears in another context, it sure would help knowing the context of the error.

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This usually happens after the statistical graphs have been used. You should deactivate them. Press [2nd][Y=] (STAT PLOT). Select [4:PlotsOff] [ENTER]. Calculator echoes Done on main screen.
Restart your graphs.

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I keep getting Err: Invalid Dim when I try to


Can you provide me brand name and model no. so that i can give a better solution.

Good Luck

Aug 17, 2009 | Texas Instruments TI-84 Plus Calculator

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I get the error message ERR: INVALID DIM with

If you are in the stat mode and entering points in list 1 and list 2, it could be that one list is longer than the other.

If you are just trying to graph from the y= screen, one of your plots is probably turned on. The easiest way to fix this is to press the 2nd button the the plus button, then 7 and then 1 and then 2. This will reset to factory settings.

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I put the equation into y= and then i hit graph. when i do, the screen comes up as ERR: INVALID DIM. help i need to graph!

dont you have to chose if its quadratic or not? I'mnot 100% sure if thats right my calculator isn't working so i cant check if thats what your doing wrong ir if thats for something else

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