Math 120 --- Intermediate Algebra
Instructor: David Arnold
What Is Intermediate Algebra?
The Math 120 course (intermediate algebra) at College of the Redwoods
is the fourth and final course in a sequence of four developmental
math courses at the College: Math 372 (Arithmetic), Math 376
(Prealgebra), Math 105 or 106 (Elementary Algebra), and Math 120
(Intermediate Algebra). Math 120, intermediate algebra, is a
prerequisite course for all of the transfer level (college level) math
courses offered at the College.
The primary emphasis is preparing students for college level
mathematics courses. Along the way, students
will:
- review the concept of number, study the fundamentals of logic and set theory, review solving equations and inequalities, then apply what they've learned to the study of compound inequalities;
- study the definition of a function, determine the domain and range of a function, work with function notation, learn how to draw and interpret the graph of a function (both manually and with a graphing calculator), learn how to solve equations and inequalities by graphing, and learn how to apply specific transformations (scaling, reflecting, and translating) to the graph of a function;
- study linear models, determine the relation between rate and the slope of a line, study both the slope-intercept and point-slope forms of a line, then apply this knowledge to various applications, including linear regression;
- study piecewise functions and their graphs and their application to absolute value functions, then use the graphs to determine the solution(s) of equations and inequalities containing the absolute value;
- study the basic graph of y = x2, then apply various transformations until the vertex form of a parabola, y = a(x-h)2+k, is well understood, use the technique of completing the square to identify the vertex and axis of symmetry, use both factoring and the quadratic formula to identify the zeros of the quadratic function, then study applications of the quadratic function, including motion and optimization;
- study the polynomial function, determining the relationship between the degree, leading coefficient, and end-behavior, identifying the zeros by factoring, drawing the graph of the polynomial and identifying extrema, then applying that knowledge to applications involving optimization;
- study the basic graph of y = 1/x and apply the usual transformations, reduce rational expressions to lowest terms, identify zeros and asymptotes of rational functions and use this information to draw the graph (both manually and with graphing calculator), add, subtract, multiply, and divide rational expression and identify restrictions, solve rational equations, and work with various applications that involve the use of rational expressions (work, rate, etc.);
- define the exponential function for all real valued exponents (natural number, whole number, integers, rational numbers, and real exponents), study the graph of the exponential function (growth and decay) and understands its asymptotic behavior, study discrete and continuous compounding of interest, introduce the number "e," study the definition of the inverse of a function and apply the inverse concept to define the logarithmic function, determine properties of the logarithm (particularly the change of base property), and apply the logarithm and exponential to various applications of growth and decay.
- study the square root function and apply various transformations to the basic graph, place radical expressions in "simple form," solve equations containing radical expressions, and study the Pythagorean theorem and its various applications (distance formula, etc.);
There is a heavy emphasis on graphing in the intermediate algebra
course, and students will be required to purchase and use a graphing
calculator (TI83/TI84).
What Are The Prerequisites?
Students entering the Intermediate Algebra course are required to show
proof of a C or better in an Elementary Algebra course taken at a college. In
lieu of this prerequisite, students can take an assessment test in
the Academic Support Center (the ASC is in the library) to insure proper
placement in the course. Students are advised to see a counselor as
they can be quite helpful in placing students in a course commensurate
with their ability and background in mathematics.
Syllabus
You can read a copy of the syllabus online
Homework
You can view the homework assignments online.
Examinations
You can view sample examinations online.
Sample Activities
You can view sample activities online.
Online Testing
You can find online quizzes at
http://msenux.redwoods.edu/optimath.
Assistance for using the online testing system can be found at
http://msenux.redwoods.edu/online/optimath.html.