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The TI-83 (plus)Graphing Calculator

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Introduction We will look at various

properties and settings of the graphing calculator.

And we will look at how to change those settings.

TI 83 Plus

Calculator

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Turning the calculator on and off.

Press the on button to turn it on and “second” off to turn it off.

Ti-83 (plus)

Graphing Calculator

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Home Screen The home screen is where

calculations are performed.

It is also the starting point to change settings.

“Second quit” always brings you back to the home screen.

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Delete Key The delete key

deletes one character at a time.

Insert (second DEL) allows you to insert characters without deleting them.

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Clear Key

The Clear key erases a line or the entire Home Screen if pushed a second time.

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Enter Key

This key will carry out any operations that were typed on the screen.

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Entry Key

Entry key (second ENTER) allows you to display what was entered previously without retyping.

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Ans Key

This key will repeat the answer without retyping it.

(second -)

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Arrow Keys Arrow keys move the

cursor left, right, up and down.

When used with the “second” key, the up and down arrows darken or lighten the screen

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Alpha Key When used in

conjunction with other keys, letters are printed out on the screen. The letters are the green ones on the top-right of each key.

HELLO

WORLD

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Mode Key

The mode key changes the way the results of calculations are displayed.

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Math Key The math key will

perform functions that are not displayed on the main keypad.

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Y= key

This is where equations are entered that we would like to have plotted.

We usually “Graph” the functions.

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X, T, , n

Used to to type the variable x.

Ex. Y1 = 2 x - 6

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Minus and Negative

The minus sign is used for calculations.

Ex. Y1 = 2x – 6

The negative sign is used to indicate the sign of the number

Ex. Y2 = - .5x + 4

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Window Determines the size

of the graphing screen.

The default setting is 10 by 10.

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A BetterWindow

A better setting for most graphs is 9.4 for x and 6.2 for y.

This setting makes the graph easier to read.

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The Graph Key

This is the key we use to see the graph of the equations or “points” that we have entered.

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Trace KeyThe trace key allows us to trace the curve on a graph.

Use the arrow keys to

move the cursor.

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Use the up and down arrow keys to switch

between functions.

Trace

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Zoom Key

Zoom settings allow us to change the view of a graph by “zooming” in or out.

It can also allow us to “zoom in” on a portion of a graph.

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Calculate Key

“Second” trace gives us the Calculate key which allows us to determine various values on a graph.

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Format Key

“Second” ZOOM gives us the Format key which allows us to change the look of the graph.

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Stat Key The Stat Key is used to

input statistical data.

The Stat Key accesses lists similar to columns on a spreadsheet.

Pressing “1:Edit” brings us to the lists.

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Edit Lists Lists allow us to

input sets of data and then graph the data and analyze the data.

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Stats Plot The stats plot key

allows us to choose one of three graphs to plot with the data in the lists.

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Plot Menu The plot menu

allows us to turn on the data points and determine the type of graph to plot.

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04/12/23 32The End (for now)