Game Development Reference
In-Depth Information
Figure 6.7
The slopes of linear functions do not change.
Note
A linear function generates a line that possesses a slope that remains constant throughout. A
non-linear function does not.
Points, Intercepts, and Slopes
Figure 6.9 illustrates the rise and run of a line you generate with a linear equation.
To identify the slope, consider first that you can identify a line using two points.
In Figure 6.9, you create three lines using unique sets of coordinates. Each line
starts at the origin of the Cartesian plane. For the middle line, the coordinate set
is as follows:
ð
0, 0
Þð
2, 2
Þ
