# GRAPHING CALCULATOR KEYSTROKES by hcj

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```									                     GRAPHING CALCULATOR KEYSTROKES
GRAPHING INVERSE FUNCTIONS
1. Graph the original function as y1 in an appropriate window.

3. Use the Draw Inverse feature of your calculator.

TI83       DRAW – DRAWINV – VARS – Y-VARS – FUNCTION –
Y1 – ENTER

TI86       GRAPH – MORE – DRAW – MORE – MORE – MORE –
DRINV – 2ND – ALPHA – Y – 1 – ENTER

Example: Graph y = 2x – 5 and its inverse. Is the inverse a function?

Note: Type the line y = x into y2 and you can see the line of reflection. You can change the
STYLE of this line if you would like.

GRAPHING CALCULATOR KEYSTROKES
GRAPHING INVERSE FUNCTIONS
4. Graph the original function as y1 in an appropriate window.

6. Use the Draw Inverse feature of your calculator.

TI83       DRAW – DRAWINV – VARS – Y-VARS – FUNCTION –
Y1 – ENTER

TI86       GRAPH – MORE – DRAW – MORE – MORE – MORE –
DRINV – 2ND – ALPHA – Y – 1 – ENTER

Example: Graph y = 2x – 5 and its inverse. Is the inverse a function?

Note: Type the line y = x into y2 and you can see the line of reflection. You can change the
STYLE of this line if you would like.

```
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