A set of ordered pairs List values in order Do not repeat values VOCABULARY! EXAMPLES! Relation: Domain: Range: NOTE! When writing the domain and range:   Find the domain and range of the ordered pairs listed for the giraffe data below. A set of ordered pairs The set of all the input (x) values The set of all the output (y) values List values in order Do not repeat values Age (yrs) Height (meters) 18 4.25 20 4.40 21 5.25 14 5.00 4.85 Age Height ( 18 , 4.25 ) ( 20 , 4.40 ) ( 21 , 5.25 ) ( 14 , 5.00 ) ( 18 , 4.85 )

A special relation that has exactly ONE output for each input Mapping Diagram: Function: A function rule is: Function notation: To Evaluate a Function Rule: 1. 2. 3. List the domain values (on left) in order and the range values (on right) in order. Draw arrows from the domain values to their range values. A special relation that has exactly ONE output for each input (or exactly ONE y value for each x value) An equation that describes a function Use f(x) to indicate the output of a function Plug in the input value(s) for x . . . Simplify to find the output values (order of operations!)

Determine whether each relation is a function, and then find the domain and range. 1. 2. 3. 4. Find the range of a function rule given a specific domain. 5. 6. ( , ) x y