20070201
  u   To change the type of a function  *  
1
  
  1. While the Graph relation list is on the display, press f  or c  to move the highlighting 
to the area that contains the function whose type you want to change.
  2. Press 3 (TYPE)5 (CONV).
  3. Select the function type you want to change to.
  
  Example  To change the function in memory area Y1 from 
 y   = 2 x  
 2
  – 3 to 
   
 y   < 2 x  
 2
  – 3
    3 (T YPE)5 (CONV)3 ( 
' Y<) (Changes the function type to “Y<”.)
  u   To delete a function 
  1. While the Graph relation list is on the display, press f  or c  to move the highlighting 
to the area that contains the function you want to delete.
  2. Press 2 (DEL) or D .
  3. Press 1 (Yes) to delete the function or 6 (No) to abort the procedure without deleting 
anything.
  
5-3-7
Drawing a Graph
 *
 1
  The function type can be changed for 
rectangular coordinate functions and 
inequalities only.
  # Parametric functions come in pairs (Xt and Yt).