Contents
- Preface
2The Language of Algebra
8Solving Linear Equations
- Introduction to Solving Linear Equations
- 8.1Solve Equations Using the Subtraction and Addition Properties of Equality
- 8.2Solve Equations Using the Division and Multiplication Properties of Equality
- 8.3Solve Equations with Variables and Constants on Both Sides
- 8.4Solve Equations with Fraction or Decimal Coefficients
- ACumulative Review
- BPowers and Roots Tables
- CGeometric Formulas
- Index
Key Terms
Key Terms
- Additive Identity
- The additive identity is 0. When zero is added to any number, it does not change the value.
- Additive Inverse
- The opposite of a number is its additive inverse. The additive inverse of a is .
- Irrational number
- An irrational number is a number that cannot be written as the ratio of two integers. Its decimal form does not stop and does not repeat.
- Multiplicative Identity
- The multiplicative identity is 1. When one multiplies any number, it does not change the value.
- Multiplicative Inverse
- The reciprocal of a number is its multiplicative inverse. The multiplicative inverse of a is .
- Rational number
- A rational number is a number that can be written in the form , where p and q are integers and . Its decimal form stops or repeats.
- Real number
- a real number is a number that is either rational or irrational.