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2.1 lesson


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2.1 lesson

  1. 1. C H A P T E R 2 . 1 ALGEBRA 1
  2. 2. Real Numbers Rational Numbers Irrational Numbers Integers Whole Numbers Natural See page 1
  4. 4. OPPOSITES AND ABSOLUTE VALUE • When two number are the same distance from zero. • Their sum is always zero. • The distance a number is from zero. • |a| = a when a is positive • |a|= 0 when a is zero • |a| = -a when a is negative
  5. 5. CONDITIONAL STATEMENTS • It has a hypothesis and a conclusion. • An if-then statement. • The if is the hypothesis and the then is the conclusion. • They can be true or false. • If it is false prove it false with a counterexample.
  6. 6. CONDITIONAL STATEMENT • If a number is a rational number, then the number is an integer. • If a number is a rational number, then the number is positive. • If the absolute value of a number is positive, then the number is positive.
  7. 7. CLASS WORK Lesson 2.2 Practice B Lesson 2.3 Practice C Lesson 2.4 Practice B