
Dynamic College Algebra : Chapter 2 : Variation (Student/Teacher)
Marsha Davis, Gary Froelich and Gary Simundza

Mathematics Topic: Algebra 
Application Areas: College Algebra 
Prerequisites: Adobe Acrobat
Adobe AIR
Software
Beam Breaking
Excel 

Dynamic College Algebra
Dynamic College Algebra uses a modeling approach built around applications from technical fields such as semiconductor manufacturing and biotechnology. Each chapter begins with an engaging contextual problem that students explore in class or on their own via an Adobe Air simulation. Reflecting the realities of modern technical careers, Dynamic College Algebra integrates data analysis and spreadsheet technology throughout.
Chapter 1: Measurement/Data Analysis
Chapter 2: Variation
Chapter 3: Introduction to Functions
Chapter 4: Linear Relationships
Chapter 5: Systems of Equations
Chapter 6: Exponential and Logarithmic Functions
Chapter 7: Polynomial Functions
Chapter 8: Trigonometric Functions
CHAPTER 2: Variation
This chapter introduces students to mathematical modeling. The models in this
chapter involve direct or inverse variation between a dependent variable and one
or more independent variables. By the end of this chapter, students should be
familiar with the shapes of graphs of power functions. The context of the
introductory activity, determining the strength of a support beam given its
dimensions, is revisited in each section of this chapter.
Career Feature: Wind Turbine Technician Career Feature
Introductory Activity: Broken Beams
Section 2.1: Direct Variation
Section 2.2: Unit Analysis
Section 2.3: Power Functions
Section 2.4: Inverse Variation
Chapter 2: Review
Chapter 2: Instructor’s Notes
Chapter 2: Answers
Chapter 2 Software
Beam Breaking 