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9. Use the trace feature (with captions)
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    We can use the trace button on the calculator to find the coordinates of points on the graph of <BR>the function. So let's press TRACE and it gives me on these coordinates. When X is <BR>this value the corresponding Y is this. We can press either the right arrow key or the left <BR>arrow key and get some additional coordinates of <BR>points on the function. Or, we can actually enter a value for X. So when <BR>X is 4 ENTER the corresponding Y value is 4. When X is 2 the Y value is 4. When X is 3, the Y value is 5.