Game Development Reference
In-Depth Information
Figure 11.2
The intersection of the two lines constitutes the intersection of the solution sets of the two equations.
use the Subtract menu item to position a minus sign between the fields. You type
the variable
x
and the constant values as shown. You can then click on the Chart
Formula 1 and Chart Formula 2 buttons to generate the graph. In the left panel,
you change the Color and Width fields for the lines to achieve the effects shown.
When you inspect the point of intersection between the two lines in Figure 11.2,
you can assess that the solution pair is likely to be (0.5, 1.5). To test these values,
you insert them into the equations. The test for the first equation shows the pair
to be valid:
y x ¼
1
1
:
5
0
:
5
¼
1
1
¼
1
