Chapter 4 Wrap Up
In this chapter we studied linear functions and systems and how they are modeled in real life scenarios. We saw how certain growing patterns, especially those taught in the elementary classroom, are closely linked to linear functions and how these ideas evolve into the ability to solve more complex word problems. Linear systems were also used to solve elementary problems as well as more complex problems requiring the use of algebra.
Hopefully at this point you realize the strong connections between the arithmetic in the elementary classroom and how these ideas grow up into the use of algebra. In the subsequent chapters we will study problems that involve nonlinear functions and applications thereof.
A function whose graph is a straight line (constant slope). Such functions may be written in the form y = mx+b where m is the slope and (0,b) is the y-intercept.
A 2 by 2 linear system is a set of 2 linear equations with the same two variables.
