Prentice Hall Algebra 2

3 Chapter Review

Connecting BIG ideas and Answering the Essential Questions

1 Function Find a point of intersection (x, y) of the graphs of functions f and g and you have found a solution of the system y = f(x), y = g(x). Solving Systems Using Tables and Graphs (Lesson 3-1)
left brace . table with 2 rows and 2 columns , row1 column 1 , y equals , column 2 negative 2 x plus 3 , row2 column 1 , y equals , column 2 2 x minus 1 , end table
A graph of two lines intersect at (1, 1).
The solution is (1, 1).
Systems of Inequalities and Linear Programming (Lessons 3-3 and 3-4)
left brace . table with 2 rows and 2 columns , row1 column 1 , y greater than , column 2 negative 2 x plus 3 , row2 column 1 , y less than or equal to , column 2 2 x minus 1 , end table
A graph of a dashed line is shaded above the line. A graph of a solid line is shaded below the line. The shared region is above the dashed line and below the solid line.
2 Equivalence If the equations of two systems are equivalent, then a solution of the system that is easier to solve is also a solution of the more difficult system. Solving Systems Algebraically (Lesson 3-2)
table with 1 row and 3 columns , row1 column 1 , table with 3 rows and 1 column , row1 column 1 , left brace . table with 2 rows and 1 column , row1 column 1 , negative y equals negative x plus 2 , row2 column 1 , 3 y equals 2 x minus 2 , end table , row2 column 1 , , row3 column 1 , 3 open 2 close equals 2 x minus 2 , end table , column 2 table with 3 rows and 1 column , row1 column 1 , rightwards arrow , row2 column 1 , , row3 column 1 , rightwards arrow , end table , column 3 table with 4 rows and 3 columns , row1 column 1 , negative 2 y , column 2 equals , column 3 negative 2 x plus 4 , row2 column 1 , 3 y , column 2 equals , column 3 2 x minus 2 , row3 column 1 , y , column 2 equals , column 3 2 , row4 column 1 , x , column 2 equals , column 3 4 , end table , end table
The solution is x = 4, y = 2
Systems With Three Variables (Lesson 3-5)
left brace . table with 3 rows and 4 columns , row1 column 1 , negative 2 x plus , column 2 y plus , column 3 z equals , column 4 negative 3 , row2 column 1 , 2 x minus , column 2 y plus , column 3 z equals , column 4 negative 1 , row3 column 1 , negative 2 x comma minus , column 2 y minus , column 3 z equals , column 4 negative 1 , end table
x = 1, y = 1, z equals negative 2
3 Solving Equations and Inequalities The matrix row operations of adding rows and multiplying a row by a constant are equivalent to addition and multiplication properties of equality. Solving Systems Using Matrices (Lesson 3-6)
table with 2 rows and 1 column , row1 column 1 , . matrix with 2 rows and 3 columns , row1 column 1 , negative 2 , column 2 3 , column 3 1 , row2 column 1 , 2 , column 2 negative 1 , column 3 1 , end matrix , row2 column 1 , left bracket . table with 2 rows and 3 columns , row1 column 1 , 1 , column 2 0 , column 3 1 , row2 column 1 , 0 , column 2 1 , column 3 1 , end table . right bracket rightwards arrow x equals 1 comma y equals 1 , end table

Fill in the blank.

  1. A consistent system with exactly one solution is a(n) ___________.
  2. ___________ is a method for finding a minimum or maximum value, given a system of limits called ___________.

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Table of Contents

Prentice Hall Algebra 2 Chapter 1 Expressions, Equations, and Inequalities Chapter 2 Functions, Equations, and Graphs Chapter 3 Linear Systems Chapter 4 Quadratic Functions and Equations Chapter 5 Polynomials and Polynomial Functions Chapter 6 Radical Functions and Rational Exponents Chapter 7 Exponential and Logarithmic Functions Chapter 8 Rational Functions Chapter 9 Sequences and Series Chapter 10 Quadratic Relations and Conic Sections Chapter 11 Probability and Statistics Chapter 12 Matrices Chapter 13 Periodic Functions and Trigonometry Chapter 14 Trigonometric Identities and Equations Skills Handbook English/Spanish Illustrated Glossary Selected Answers Index Acknowledgments