College Algebra - Exam #1 Review

Natural Numbers (Counting Numbers) : 1, 2, 3, 4, 5, 6, 7, 8, 9, etc.Whole numbers that are not negative.

Integers : -3, -2, -1, 0, 1, 2, 3, etc.These are the natural numbers, their additive inverses (negatives), and 0.

Example: a/0 : Not defined.

Example: 0/a : 0.

What is the Distance Formula? :

What is the Midpoint Formula? :

What is the Domain of a Function? : The Domain of a Function is the set of values that makes the function well defined. If the function is not well defined at a point, then that point is not in the domain.

What is the Range of a Function? : The Range of a Function f(x) is the set {y=f(x)}.

What is the Point-Slope Form of an Equation of a Line? :

What is the Slope Formula? :

What are the Inequality Symbols? :

linear Inequalites : *Keep all X's to the left of the equation.*When we multiply or divide by a negative number reverse the inequality sign.