# TI-73 Graphics Calculator Information

## Top (first) 10 Things To Know To Use a TI-73 Calculator

- 2nd –Quit – takes you to the home screen.
- To get yellow things, hit the 2nd button and the button you want.
- Mode – (sets the modes) Use the
*left-hand* choices.
- CLEAR – used to clear a line.
- 2nd –ENTRY – gives you the last expression, so you can edit it. It can be a big time-saver. (can be used repeatedly)
- ANS – means the last answer the calculator gave.
- The calculator does use
*implied multiplication*, just like in algebra. For example, 5*x *means five times *x*.
- Functions – The TI-73 is
*great *for functions
- Enter equations using the
**Y=** button.
**zoom**|6:ZStandard makes a good starting graph (and is *good practice*).

*x *runs from -10 to 10 and *y *runs from -10 to 10. Then use,
**window** is used to adjust the viewing window.
**trace** – allows you trace a graph and look at ordered pairs. left/right changes *x*; up/down jumps to a second function. Note: You can *type* in an *x*-value.
**Table **– takes you to a table. Use **tblset** to set up your table.
**Graph **– yep, takes you back to the graph.

- DEL and INS – used for editing. DEL deletes. INS allows you to insert (squeeze in).
**π** – There is a pi button. Use it.

## Advanced Features

**Solver** – Hit **Math**-6. You can put in an equation, such as 2x-12 = 4(x+3), and the calculator will solve it. You do have to hit **enter** three times. The answer will have a small square next to it.
**List** and **plot** can be used to graph data.
**Stat** can be used to calculate statistics.

## Online Resources

TI-73 Explorer™ graphing calculator page

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Page created by: Jim Olsen, Ph.D. ~ Western Illinois University ~ Shout-out to the *West Prairie *math students!