INTRO TO LINEAR EQUATIONS AND SOME APPLICATIONS
Introduction to linear equations:
An equation of a line in 2D space is comprised of two variables.
ax + by = c a, b, and c are constants. This is a linear equation.
An equation of a plane in 3D space
The Real number system and the number line
Real numbers can be grouped into the following sets.
Ordering the real numbers
a < b if b a is positive.