Relations and Functions

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RELATIONS AND FUNCTIONS

In this unit, you will be introduced to relations and functions. You will determine when a relation is a function. You will also explore various methods used to graph linear equations and verify that a point lies on a line for a given equation. You will examine equations that contain one variable. In addition, you will identify the graphs of functions and write equations as functions.

Introduction (01:52)

Function Terminology (12:38)

Domain and Range (04:59)

Graphing a Function--Swimming (02:12)

A Function Expressed in a Table--Gold (01:55)

Function Expressed in a Graph--Working Wages (02:01)

Algebraic Equations Expressing a Function--Venice (02:06)

Graphing Linear Equations (07:00)

Summary of the Properties of Slope

Graphing A Line Using Intercepts

A Practical Example (05:14)

Graph Paper (PDF)

Review Worksheets
The review worksheets are provided to give extra practice in skill areas presented in the unit. The worksheets are optional unless otherwise specified by the instructor. The worksheets are Adobe Acrobat files. Click on the pencil icon to open the document. Save the document to a folder on the computer, and then enter answers for the problems in the textboxes. Once the document is completed, make sure to save it again, and then send the document to the instructor via email. The answer key provided is for the instructors only and is password protected.

	Practice Worksheet: Domain, Rangle, Relations, Functions
	Answer Key (Password Protected)
	Practice Worksheet: Evaluate a Function
	Answer Key (Password Protected)
	Practice Worksheet: Evaluate a Combination of Two Functions
	Answer Key (Password Protected)