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The Explorer apps 301
Equation mode Tap to enter
equation mode. A dot
will appear on the Eq
button at the bottom of
the screen.
In equation mode, you
use the cursor keys to
move between parameters in the equation and change
their values, observing the effect on the graph displayed.
Press
\ or = to decrease or increase the value of the
selected parameter. Press
> or < to select another
parameter. Press
Q
to change the sign of a.
Test mode Tap to enter test
mode. In Test mode you
test your skill at matching
an equation to the graph
shown. Test mode is like
equation mode in that you
use the cursor keys to
select and change the value of each parameter in the
equation. The goal is to try to match the graph that is
shown.
The app displays the graph of a randomly chosen linear
function of the form dictated by your choice of level. (Tap
or to change the level.) Now press the
cursor keys to select a parameter and set its value. When
you are ready, tap to see if you have correctly
matched your equation to the given graph.
Tap to see the correct answer and tap to
exit Test mode.