This is for a cool bridge.
First, press the (Y=) button.
Then, follow the orders of these buttons:
(MATH), (Right Arrow), (Enter), (TAN), (TAN), (COS), the X variable button, (Right Arrow), (*), (-), (1), and then press graph
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Hit "Y plot" and insert your equation, then hit graph.
92
Yes, the TI-84 is allowed during the ACT.
You can't actually graph it on a ti-84 calculator, but an app on the calculator can. The app is called "Inequality Graphing". Most ti-84 calculators come with that app, but to check go into your apps section on your calculators and find an app called "Inequalz" (short for Inequality Graphing). If you don't have it don't panic; I am sure you will be able to download it form online to your calc. After you open up the app it will look just like the "Y=" button on the calc. just with a "X=" on the top left corner. So click the "X=" and now you can graph X on the calculator.
Click on "Y=" to begin graphing. In the upper left hand corner, there should be a tab that says "X=". Click the up arrow to move the cursor there. Click enter and you should be able to graph it from there! To see the graph, click on "graph". I hope this helps!