What Teams Are Playing On Monday Night Football Tomorrow Help, My TI-83 / Ti-84 Won’t Graph

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Help, My TI-83 / Ti-84 Won’t Graph

It’s 8 o’clock at night. Dinner is ready. You’re sitting down to watch a movie or Monday night football – and then it happens. . . “Mmmmmmmmmm (or Dadddddddddd), my calculator isn’t working. I have math homework due tomorrow, and my graph isn’t showing up.”

“This can’t be that bad,” you think. “I passed math in high school.” Heck, I even installed the Quicken Accounting System at work. How complicated can a calculator be?”

The last time you looked at your child’s TI-83 or TI-84 was in August at the office store; she was in front of a shopping cart with three binders and notebook paper on top of the pile. It didn’t look so bad then, but now you look closer and you see all kinds of keys that you’ve never seen before on a calculator. There’s something familiar at the bottom — the normal array of number keys, and to the right are the usual addition, subtraction, multiplication, and division keys. But what the hell are “MODE”, “DEL”, “STAT”, “ZOOM”, “TRACE”, etc.? What are you going to do? Who are you going to call?

Relax.

Here are some really simple things to do; but remember, the title of this article is “Help, my TI-83 / Ti-84 won’t display a graph”, and that’s really all this article covers.

Graphics buttons

Look at the top row of buttons on the TI-83/TI-84 calculator. There should be five of them, separate from the other buttons; and should have the following labels:

      [Y=]   [WINDOW]   [ZOOM]   [TRACE]   [GRAPH]

This is where all your activities will take place.

Three main problems

In most cases when the graph is not displayed, there are three reasons:

  1. Graph function.The graph function was not entered correctly or was not entered at all.
  2. Chart not included. The graph function is entered correctly, but graphing is not enabled.
  3. Viewing window. The feature preview window is set to the wrong size or location.

We will deal with these one by one.

Check that the graph function is entered correctly

Push [Y=] button on top of the calculator. This takes you to the I= editor screen. You should see a screen that looks something like this:

Plot1 Plot2 Plot3

I1= 2X+1

I2=

I3=

I4=

I5=

I6=

The expression “2X+1” is just an example, but you need to see some kind of expression on the I= editor screen, not just a bunch of empty “I=” lines. If all you see is the following, then you need to add an expression:

Plot1 Plot2 Plot3

I1=

I2=

I3=

I4=

I5=

I6=

If you want to try a really simple expression to make sure the calculator can draw, use “I1=Xs”. This should draw a nice 45 degree line directly through the start of the graph screen.

Check if the graph function is turned on

It is possible that the function graph is not included in the I= editor screen. This bug is a little subtle. Look at the “=” sign in the equation you are trying to draw The “=” sign must be highlighted.

If not, you need to place the cursor on the “=” sign and press [ENTER] key, to highlight it.

The preview window must be set to the correct size and location

If the viewing window is set to the wrong size or location, the calculator may plot, but you won’t see it on the screen.

There are many ways to adjust the viewing window, but a simple and reliable method is to simply “Zoom Out” until you can see the feature you are trying to draw. Push [ZOOM] button on top of the calculator. Then press “3” to zoom out. Repeat until you see the function you are trying to draw. You should now have an idea of ​​which window you should use to view the plotted function. Push [WINDOW] button at the top of the calculator and adjust the screen features as needed.

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