1. To find the y-intercept:
Hit  , #5 TRACE, #1 Graph Trace. The spider will start on the y-axis,
showing the y-intercept. |
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2. To find the x-intercept:
The x-intercept of a graph is also known as the "root" or the "zero" of the function.
Press MENU - #5 - #1 to TRACE the graph.
Use the NavPad to move the trace point to the x-axis. As you approach the x-axis, the spider will "jump" to the zero location. When the  appears, you have found a zero of the function.
Read more about Zeros. |
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3. To find where the graphs intersect:
A second graph is plotted  .
Press MENU - #6 Points & Lines - #3 Intersection Points
When the pointing hand appears, click on each graph
and all intersections points will be found.
Read more about Intersection Points |
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4. To find a specific value while tracing:
To "jump" to a certain x-coordinate on the screen,
press MENU - #5 Trace - #1 Graph Trace - Enter.
Now, simply type the x-coordinate that you desire.
The ordered pair will appear and the spider will be located at the closest plotable point.
If you choose a value out of the current viewing window, the graph will adjust to include your new point.
For this graph, the x-coordinate 22 was selected. Notice the dotted line indicating the location on the x-axis as well as the ordered pair (22,-8).
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Up and down arrows will move between functions. |
5. Controlling what the graph looks like (attributes):
Be sure the command line is referring to the graph you wish to alter.
Press  to move along the options on the command (entry) line.
The  is the Hide/Show button.
The  is the Attribute button. The attributes appear below. |
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Line Weight: Thin,
Medium,
Thick |
Line Style: Solid, Dashed, Dotted |
Label Style: y =, f( ), f( )=, y = f( ), f |
Continuous or Discrete |
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