Y-Intercept using the Dynamic Grapher Function

In Dynamic Graphing (CFX-9800G or CFX-9850G)

     Set graph window to initial setting 
     Shift F3
     INIT (F1) setting the graph window
          -6.3 < X < 6.3
          -3.1 < Y < 3.1

Select B-IN (F5)

Select (F1) Y=AX+B  Linear Eqaution

EXE and will see

     Y1 = AX + B
     Dynamic Var :A
          Set  A = 2
               B = 1
          Select Range (F2) and see
               Y1 = AX + B
               Dynamic Range 
               A
                    Set  Start :-3 (EXE)
                         End   : 4 (EXE)
                         Pitch : 2 (EXE)

               EXE and see
                    Y1 = AX + B
                    Dynamic Var :A
                    Set  A = 2
                         B = 1

Highlight B = 1

Select (F1) which makes B the dynamic variable
DYNAmic (F6)   
AC/On to stop Dynamic grapher
EXIT key

SHIFT SET UP (MENU)
     Arrow to Locus  
          F1 to turn Locus on
EXIT
Highlight B =  (must reselect B as Dynamic Variable -- devault is
A)
     SEL to select B as the dynamic variable
DYNAmic (F6)

Have students describe what they see

     Describe the impact of B changing
     Describe similarities and differences in the graphs


AC/On to stop Dynamic grapher
     Speed can be altered 
     EXE returns to the Dynamic grapher      


Submitted by Dr. Doug Brumbaugh, University of Central Florida