Question about Texas Instruments TI-83 Plus Calculator

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When I turned on my graphics calculator there were a lot of dots on the screen and - - - which kept flashing. If you press 'graph' a line will also appear. Other than that it won't do anything and if you press buttons, more dots appear. Yesterday it was doing this but all of a sudden just disappeared and it worked perfectly. Today though it is doing it again. Do you know what could be happening?

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Check the battery and try resetting it.


Posted on Sep 08, 2008


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How do you shade the graph

Press the y= key. Move down to the line containing the function to be graphed. Press left-arrow repeatedly to move the cursor to the far left. Press ENTER repeatedly to cycle through the different graph styles. Your choices are line, thick, above, below, path, animate, and dot.

Dec 07, 2010 | Texas Instruments TI-84 Plus Silver...

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My TI-84 Plus graphing feature is connecting my trig functions across the asymptote. How do I make it stop doing this?

Press MODE and change "Connected" to "Dot".

Alternatively, you can change the style for individual graphs. In the Y= screen, move to the line then press left-arrow to move past the = sign, then press ENTER repeatedly to cycle through the different graph styles.

Nov 10, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

Graphing Problem

You have activated the Transfrm Application and you must kick it out of memory.
  1. Press [APPS].
  2. Use the arrow key to scroll up pr down to point to Transfrm.
  3. Select it and press [ENTER]
  4. Select [1:Uninstal] and press [ENTER]
  5. Open the [Y=] function editor to enter your functions and then
  6. press [GRAPH] to have them drawn.

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

1 Answer

How to plot a graph on TI-83 plus texas calculator?

Prepare calculator to graph

Turn StatPlotsOff to avoid errors:
Press [2nd][STATPLOT][4:PlotsOff][ENTER].

Setup Graph type
  • Press [MODE] key.
  • In Mode set up screen, make sure that the angle unit is the degree.
  • Use the arrows to move cursor to 3rd line to highlight {degree} and press [ENTER]
  • On same screen, verify that Func is highlighted.
  • If it is not, use arrow to highlight Func and press [ENTER] to validate.
  • Do not worry if you do not have exactly the same screen as in the screen picture (We may have different OS Versions)

Entering the functions to draw.
  • Press [Y=] to enter function editor.
  • Type in a function
  • Press [ENTER] at the end of each function.
  • Before pressing [GRAPH], make sure that all the = signs that define the functions to be graphed are highlighted white on black. If one is not highlighted, use arrow to move cursor on the sign and press [ENTER].
  • In the screen capture 4 functions are slated to be drawn.

Selecting the Graph Style (You may ignore this now, because it is unimportant for just one graph)

  • Select the graph style: The small piece of line to the left of a Y that defines a function is the style.
  • Move cursor on it and press [ENTER] .
  • Each [ENTER] (on same line) selects another style.
  • On the next screen you have all the styles available on the calculator.
  • Do not select the bubble on line 6: It is for animations. It will not leave a trace at the end of the plot.

Drawing the Graphs
  • Press [GRAPH] to see the graphs.
  • If one of them is missing, verify that its = is still highlighted, then use the [WINDOW] to set the Window dimensions,
  • Here are the dimensions of the standard window

You can also press [ZOOM] to adjust.


The selection 6:ZStandard sets the dimensions as on the screen Titled Window (above).

In the window screen you can set Xmin=-180, Xmax=180, Xscl=10, Ymin= -0.6, Ymax= 1.5, Yscl=1. The minus here is the change sign (-) to the right of the [.] dot.

Mar 12, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

I tried to draw a graph manually but I kept getting an error message even thoug I did it step by step like the users guide instructions said

Error messages are important to help solve the problem.
Try the following instructions to draw the function Y=5X+2
but first Reset the calculator by pressing the RESET button on back of calculator. I do not want you to run into problems created by old settings.
  1. Turn calculator ON. If you do not see several icons press [MENU].
  2. Use arrow to select the [GRAPH] application and press [EXE].
  3. In the entry screen, the line with Y1= is highlighted. If it is not, use arrow to highlight it.
  4. Press the right arrow, the highlighting disappears leaving you with Y1= and the blinking cursor.
  5. At the position of the cursor type 5 then press the [X, theta,T] key, under the [ALPHA]. On the screen appears 5X, complete your equation by typing [+] 2
  6. Press [EXE] to store function.
  7. If you want to draw other functions, it is time to do so on that screen.
  8. When done, press [F6:Draw].
  9. If the screen does not show a lot of the function, you can use the arrow keys to pan (move the center of the graph. You can pan Up, Down, Left, or Right.
  10. You can also press [SHIFT][V-Window] to set the window limits.

Feb 17, 2010 | Casio FX-9750GPlus Calculator

1 Answer

Graphic calculator texas:when i graph any function, it always says "invalid dim"


A previous problem on statistics has turned the statistical graphs ON and that interferes with the graphing of functions.
TurnOff the STATPLOTS by pressing [2nd][STAT PLOT][4:PlotsOFF]. Command echoes on the home screen. Press ENTER. I was going to add to reset all ram just in case.
Make sure you are drawing the right type of graph. To check that press [MODE], scroll down to 4th line to highlight Func and press ENTER, if you are drawing y=f(x) functions. The others are PARametric, POLar, SEQuence.
Hope it helps.

Nov 05, 2009 | Texas Instruments TI-84 Plus Silver...

1 Answer

My graph is not showing up when im typing an equation....the line will show and the points but not the graph....plzzz help!

Your graphic is drawn in dotted style. Change it to connected if you want.
Press [MODE] Use arrow to highlight Connected and press [ENTER]. Press [GRAPH] tor edraw your graph.
Hope it helps

Oct 27, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

How do you find the zeros of a function on a TInspire


Turn calculator. Use arrow to highlight the 2:Graph and Geometry application. Enter your function at the bottom of the screen. Use TAB to move focus on command line.
Press [ENTER] to graph.
While graph is drawn, press [menu] key. Select [5:Trace][1:Graph Trace] . An X appears on the graph screen. Use arrow to move cursor towards one of the zeros you see. At some point the calculator will pop up the label [zero]

Press [ENTER]

Use arrows to move the cursor near a second zero. When [zero] pop up text appears, press [ENTER]


The value of the secon zero is also displayed.

You can also the nSolve command

Use the nSolve( function available in main calculator application. Here some exemples of syntax
On the second command line, the small vertical segment after the right parenthesis is accessed by the key sequence [CTRL] [infinity, beta, degree] key, the one under [left arrow/clear].


Hope it helps.

Oct 26, 2009 | Texas Instruments TI-Nspire Graphic...

1 Answer

TI-84 silver: Black arrow instead of line in function mode

I have answered this question multiple times. I have no idea why you calculator refuses to allow you to choose more graph styles. Maybe you should reset it by clearing the RAM.
Concerning the connected asymptotes.
In truth your function has one aymptote namely the straight line x=2 but your graph has two asymptotic branches, one tends towards -infinity, the other toward + infinity. That they seem connected is an illusion due to the finite resolution of the screen. This is made worse if you select a connected graph instead of a dotted one. I am enclosing a screen capture of the graph for the same function, drawn on a calculator with better resolution.


This clarification being given, it remains that you still have a problem since you cannot choose other styles. Do try to reset the RAM, and choose dotted graphs. If that does not work, maybe you should update the OS or reinstall it from
I hope it solves your problem. If it does not, do not blame me, and remember that I tried my best.

Oct 16, 2009 | Texas Instruments TI-84 Plus Silver...

1 Answer

Graphs with asymptotes connect?

The calculator can't tell the difference between a function with an aymptote and a function that rapidly goes from a large positive number to a large negative number in one step.

One way around this is to plot with the asymptote at one edge. Press the WINDOW key and change the limits. Another way is to change the plot type from Line to Dots. Press Y= to enter the Y= editor, select the function being plotted, press Left to highlight the = sign, then press ENTER repeatedly to cycle through the different graph styles.

May 23, 2009 | Texas Instruments TI-84 Plus Silver...

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