Operation Manual

Chapter 8: Draw Instructions 134
Using Pen to Draw on a Graph
Using Pen to Draw on a Graph
Pen draws directly on a graph only. You cannot execute Pen from the home screen or a program. Pen is
also not included in Catalog Help. You can capture the screen you created using TI-Connect™ software
and save it to your computer for homework or teaching material or store it as a picture file (Pic Var) on
your TI-84 Plus C.
To draw on a displayed graph, follow these steps.
1. Select
A:Pen from the DRAW menu.
2. Press t b to change the color.
3. Place the cursor on the point where you want to begin drawing. Press Í to turn on the pen.
4. Move the cursor. As you move the cursor, you draw on the graph, shading one pixel at a time.
5. Press Í to turn off the pen.
For example,
Pen was used to create the arrow pointing to the local minimum of the selected function.
Drawing Points on a Graph
DRAW POINTS Menu
To display the DRAW POINTS menu, press y<~. The interpretation of these instructions depends
on whether you accessed this menu from the home screen or the program editor or directly from a
graph.
Note: These points and pixels are on the Pic layer. The Background Image will be the “off” color.
Drawing Points Directly on a Graph with Pt-On(
To draw a point on a graph, follow these steps.
1. Select 1:Pt-On( from the DRAW POINTS menu.
2. Press t
b to change the color and mark (› or +, dot-thick or dot-thin).
3. Move the cursor to the position where you want to draw the point.
Note: To continue drawing on the graph, move the
cursor to a new position where you want to begin
drawing again, and then repeat steps 2, 3, and 4.
Note: You can change the STYLE as long as the menu is
active.
To cancel
Pen, press ‘.
DRAW POINTS STO BACKGROUND
1: Pt-On(
Turns on a point.
2: Pt-Off(
Turns off a point.
3: Pt-Change(
Toggles a point on or off.
4: Pxl-On(
Turns on a pixel.
5: Pxl-Off(
Turns off a pixel.
6: Pxl-Change(
Toggles a pixel on or off.
7: pxl-Test(
Returns 1 if pixel on, 0 if
pixel off.