Mr. Johns

How to use a calculator to find all zeros.

First, turn on the calculator and click number 1, so you can open a new document.

Once the new document, click number 2, so you can open a Graph page. A graph similar to the one bellow will show up. Once you see that you could plug in any equation like 5x-3.

Once you have plug in that equation and pressed enter you will see a graph. 

To find the zero of any equation you must press Menu, then Trace, then Graph Trace. 

Once you have pressed enter you will see a circle with a X in it, as shown above. 

To find the zero you just have to move the cursor and move it left to right to get to the Zeros and pressing Enter. Once this is done you have found your zeros without doing much work. 

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