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.