Question about Texas Instruments TI-82 Calculator

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TI82 does not graph correctly

Calculator would not come on. Replaced triple AAA batteries. entered equation, and hit graph..but graph is not correct. Could the small battery being dead cause this problem?

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Re: TI82 does not graph correctly

My best advice is to go to Window then Format menu and make sure your axes are on. Or press 2nd then up arrow and hold it untill it is visible (if you go too dark do the same thing just with the down arrow.

Posted on Nov 23, 2008

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When I try to enter a simple equation and graph it, I get error 07 message instead of graph.

Error 07 Syntax
Means you made a typing error while entering the equation. Using the minus sign instead of the negation sign (change sign) (-), can produce a syntax error. Maybe you need to explicitly type the multiplication sign
y= (-) 1.5*x +3
Try entering it as 3 - 1.5*x

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Jun 11, 2014 | Texas Instruments TI-86 Calculator

1 Answer

How to set a ti-84 to graph both sides of the equation separately on the same coordinate system.

If I'm understanding you correctly, you want to graph something like


If this is correct, graph 5x+3 in the y1 line and 9 in the y2 line. To find the solution, you will press 2nd, then trace the intersection and hit enter 3 times. This will get the solution you need for the equation.

If this is not what you are wanting to do, you need to be try again and elaborate more.

Jun 28, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I am entering information from a sample question for drawing a scatterplot and finding the linear regression equation. I have copied the example exactly and keep coming up with the same two problems. 1. I...

You might not see the scatter plot when you go to the graph because the boundaries are not set correctly. With the scatter plot turned on, go to "zoom" and then scroll down to "zoomStat" and hit enter. Try going to the graph again and see if the the scatter plot shows up. As for the the equation being slightly different than the examples, this is probably just the calculator rounding up the answers it gets. Good luck!

Jun 24, 2011 | Texas Instruments TI-84 Plus Silver...

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My TI-83 Plus calculator won't graph anything whatsoever. Did I need new software. Please help me.

First - Are you graphing within the proper window? Hit the zoom button and change it to zoom Standard within the graphing window.

Second - Are you inputting the equation correctly? Make sure you are inputting your equations in a y= format. If possible, please reply with a screenshot of your graph screen.

Feb 07, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

I want to graph a parabola on my ti-84. i entered the equation in y=, and then i turned on plot on, then i hit graph, but it is showing invalid dim. help please?

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

Oct 29, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

Ti 84 plus problem

The calculator only displays from -10 to 10 on the x and y axes, and both of your lines are outside of that range. However, it is easy to change that.

1. Hit the gray "WINDOW" button that is directly under the screen
2. Change "Xmax" to 150
3. Change "Ymax" to 200

Remember to change both of those values back to 10 when you are done with this problem!

Here's how to graph it:
1. Hit the "Y=" button
2. Enter your first equation after Y1, and your second equation after Y2
3. Look over both the equations to make sure you typed them correctly
4. Hit the "GRAPH" button
5. If you don't see the intersection you will need to adjust Xmax and Ymax again
6. Hit Hit "2ND" and the "TRACE" to bring up the "CALC" menu
7. Scroll down to "intersect" and hit enter
8. Hit enter 3 times (You use the first and second curve options when you have more than 2 lines)
9. It should display the coordinates at the bottom
10. I got (76, 142.1) for the intersection

Thanks for asking this question! I used to do this a much harder way, but while I was calculating the answer to your question I hit a wrong button and accidentally found this method!

Jun 30, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

Error invalid dim

You're 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.

Apr 11, 2009 | Texas Instruments TI-83 Plus Calculator

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

3 Answers

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

2 Answers

Graphing multiply equations

When you go to Y=, you should get a list that says:
etc. You just enter the first equation into the Y1= space then hit ENTER and it will go to Y2=. Enter the second equation there. After you have entered all of your equations, push GRAPH and they should come up in order but they will all appear.

Also, make sure your window is set appropriately so that you are able to see all of the graphs.

Lastly, when you look at your Y= screen, are there funny looking arrows before the Y=? If so, do this:

  • Press [APPS] key
  • Select Transfrm from the menu
  • Press 1:Uninstall

  • Hope one of these are helpful!!


    Feb 18, 2008 | Texas Instruments TI-84 Plus Calculator

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