Sumário
- Preface
1Foundations
2Solving Linear Equations and Inequalities
- Introduction
- 2.1Solve Equations Using the Subtraction and Addition Properties of Equality
- 2.2Solve Equations using the Division and Multiplication Properties of Equality
- 2.3Solve Equations with Variables and Constants on Both Sides
- 2.4Use a General Strategy to Solve Linear Equations
- 2.5Solve Equations with Fractions or Decimals
- Index
Key Terms
Key Terms
- coincident lines
- Coincident lines are lines that have the same slope and same y-intercept.
- complementary angles
- Two angles are complementary if the sum of the measures of their angles is 90 degrees.
- consistent system
- A consistent system of equations is a system of equations with at least one solution.
- dependent equations
- Two equations are dependent if all the solutions of one equation are also solutions of the other equation.
- inconsistent system
- An inconsistent system of equations is a system of equations with no solution.
- independent equations
- Two equations are independent if they have different solutions.
- solutions of a system of equations
- Solutions of a system of equations are the values of the variables that make all the equations true. A solution of a system of two linear equations is represented by an ordered pair (x, y).
- supplementary angles
- Two angles are supplementary if the sum of the measures of their angles is 180 degrees.
- system of linear equations
- When two or more linear equations are grouped together, they form a system of linear equations.
- system of linear inequalities
- Two or more linear inequalities grouped together form a system of linear inequalities.