College Algebra Exam -1review questions with answers

College Algebra Exam #1 Review
question with answers

Natural Numbers (Counting Numbers) - answers1, 2, 3, 4, 5, 6, 7, 8, 9, etc.

Whole numbers that are not negative.

Integers - answers-3, -2, -1, 0, 1, 2, 3, etc.

These are the natural numbers, their additive inverses (negatives), and 0.

Rational Numbers - answers2/1, 1/3, (-1/4), 22/7, 0, 1.2, etc.

Every integer is a rational number. Rational numbers can be expressed as decimals
that either terminate (end) or repeat a sequence of digits.

Irrational Numbers - answersIrrational Numbers are numbers which are no rational
numbers. They cannot be expressed as the ratio of two integers and has a decimal
representation that does not terminate or repeat.

Real Numbers - answers2, -10, -131.3337, 1/3, etc.

Real Numbers can be represented by decimal numbers. Real numbers include both the
rational and irrational numbers.

Order of Operations is... - answersPEMDAS

Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction.

Example: a/0 - answersNot defined.

Example: 0/a - answers0.

What does Relation mean? - answersA relation is a set of ordered pairs.

What is an Ordered Pair? - answers(x, y)

What is the Domain? - answersx.

What is the Range? - answersy.