Texas Instruments TI-89 Manual Book page 325

Drawing Lines and
Circles
Drawing
Expressions
308 Chapter 17: Programming
Command Description
Circle or Draws, erases, or inverts a circle with a specified
PxlCrcl center and radius.
Draws a line with a specified slope through a
DrawSlp
specified point.
Draws, erases, or inverts a line between two sets of
Line or
coordinates.
PxlLine
Draws, erases, or inverts a horizontal line at a
LineHorz or
specified row coordinate.
PxlHorz
LineTan Draws a tangent line for a specified expression at a
specified point. (This draws the tangent line only,
not the expression.)
Draws, erases, or inverts a vertical line at a
LineVert or
PxlVert specified column coordinate.
Command Description
Draws a specified expression.
DrawFunc
Draws the inverse of a specified expression.
DrawInv
DrawParm Draws a parametric equation using specified
expressions as its
Draws a specified polar expression.
DrawPol
Draws contours in 3D graphing mode.
DrwCtour
Draws two expressions and shades the areas where
Shade
expression1 < expression2.
x and y components.