Graphing Equations on the TI-84

Graphing with TI-84

By AnneMarie Grayburn

1. Turn your calculator on

2. To turn it off, first press the "2ND" button near the top, then the "ON" button again​

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​Basics

• Only deletes the current character

• Use the arrow keys to select what to delete​

Delete

Clears everything

Clear

Use to move around within what you've typed, or around on a graph

Arrows

​Just like any other calculator

​​Operations

Be sure to use the negative button when needed NOT the subtraction

​​Decimal and Negative

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1. ​Type a number, use () around negatives​

2. Use the x² button to raise that number to the 2nd power​

Square

1. ​Type a number, use () around negatives​

2. Use the ^ button to raise that number to any power

Caret

1. ​Use the blue "2ND" button, then select the x² button

2. Type a number​

3. Close the ) after​, or arrow over

Square Root

Multiple Choice

Use your calculator to find the correct answer to this past Keystone question.

(Type in as one line... only hit enter once)

• A

• B

• C

• D

You can use the >Frac command. When you have a decimal as an answer...

1. Press the "MATH" button

2. Press "ENTER" to select

3. Press "ENTER" again to convert to a fraction​

Watch the video on the next slide to see this in action

But I got 0.125!

Screencastify

You can open this webpage in a new tab.

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Use this button to get to the "y equals" screen

This is where you can type in equations and then see their graphs​.

Use the "CLEAR" button on each line if you have anything currently typed in​

y=

After typing in an equation, use the graph button to see the line

Graph

Does it look weird? Or blank?

1. Press the "ZOOM" button

2. Arrow down to 6 and hit enter OR use the 6 key​

3. This will reset the screen

Zoom 6

Draw

Graph the line y = 3x - 2. Sketch what it looks like

Sometimes, "Zoom 6" doesn't show you enough...

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​Some text here about the topic of discussion.

Zoom Fit

Press "GRAPH" again and type in two equations

Try Graphing a System​

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1. Press "ZOOM"

2. Scroll down to 0: ZoomFit, then hit enter OR Press 0

3. Press GRAPH and you should see the two lines cross

Zoom Fit