Sec P.1 Cont Sec, P.1 cont.

Law of Trichotomy For any 2 numbers, a and b Sec P.1 Cont Law of Trichotomy For any 2 numbers, a and b a = b, a < b, or a >b

Absolute Value The distance a number is from 0 on the number line What is |0|?

Abs. Value Properties |ab| = |a||b| |a/b| =|a|/|b| b ≠ 0 Remember on abs. val. Do what is inside the abs. first.

The distance between a & b d(a,b) = |b-a| = |a-b|

Algebraic expressions Terms Variable terms Constant term Coefficient Uses variables with numbers Terms Separated by addition Variable terms Terms that contains a variable Constant term Does not contain a variable Coefficient Numerical part of a term Evaluate Means substitute a # for the variable

Operations Primary operations Inverse operations Addition and multiplication Inverse operations Subtraction and division

P. 10 Properties of negation and equality P. 11 Properties of zero P. 9 at top P. 9 rules of Algebra P. 10 Properties of negation and equality P. 11 Properties of zero # 4 & 5 P. 11 Properties of Fractions Ex. 5

Fundamental Theorem of Arithmetic Factors or Divisors The numbers you multiply together to get something. Prime numbers Number that the only factors are 1 and itself Composite numbers Can be written as a product of 2 or more primes Fundamental Theorem of Arithmetic Every positive number greater than 1 can be written as a product of primes in exactly 1 way

Homework P. 12 51-71 odd, 89-93 odd, 99-119 odd