4. Enter ax + b ≤ c into
the Input Bar and
press Enter.
Hint: You can use the
Virtual Keyboard to
enter the ≤ symbol.
GeoGebra will
automatically create
sliders for the
parameters a, b, and c
5. Use the Move tool to
adjust the slider
values so that a = 1, b
= 1, and c = 3.
6. Change the increment
of the sliders to 1.
Hints: Select number
a and open the Style
Bar of the Graphics
View.
Style Bar
Select number a
7. .
Slider tab
Increment
Open the Settings of
number a and select
tab Slider.
Set the Increment to 1
and repeat for
numbers b and c
Settings
9. Zoom Out to make a
bigger part of the
coordinate system
visible on screen
Zoom out
10. Set the distance
between the marks on
the axes to 1.
Hints: Make sure that no
object is selected before
you open the Style Bar
of the Graphics View.
Open the Settings of the
axes.
Select tab xAxis and set
the Distance to 1.
Repeat on tab yAxis.
Make sure no object is selected
Change Distance
11. Finally, you can select
all objects and
animate. What do you
observe?
23. Create point
R = (x(D), 0).
Hint: The
input x(D) gives you
the x-coordinate of
point D. Thus,
point R shows the
result of the addition
on the number line
Point R
26. Use the Style Bar to
enhance your
construction (e.g.
match the color of
sliders and vectors,
change line style, fix
sliders, hide labels and
points).