This video illustrates how to draw a dotted or solid line when graphing an inequality, depending on what type of symbol exists in the equation. For part 2 of this video, including examples 3 and 4. These techniques will help you draw polar graphs with the SGPLOT procedure with ease! Drawn as a straight line, as shown by the red dotted line.
You can use the TI-83 Plus graphing calculator to identify the graphs of several polar equations. To set a different graph style for each polar equation:
- Press [Y=] to access the Y= editor.
- Use thekeys to place the cursor on the icon appearing at the very left of the definition of the polar equation.
- Repeatedly press [ENTER] until you get the desired graph style.You have five styles to choose from: Line, Thick Line, Path, Animate, and Dotted Line. Each time you press [ENTER], you get a different style. The Path style uses a circle to indicate a point as it’s being graphed, and when the graph is complete, the circle disappears and leaves the graph in Line style.The Animate style also uses a circle to indicate a point as it’s being graphed, but when the graph is complete, no graph appears on the screen.The most common styles used to graph polar equations are Line, Thick Line, and Dotted Line.
If you don’t want the calculator to graph a polar equation, un-highlight the equal sign in that equation. To graph it at a later time, rehighlight the equal sign. To do so in the Y= editor, use the
keys to place the cursor on the equal sign in the definition of the polar equation — and then press [ENTER] to toggle the equal sign between highlighted and unhighlighted.