Chapter 4

Video Instruction

Linear Equations and Inequalities in Two Variables; Functions

Section 4.1

The Rectangular Coordinate System

	4.1.1 - An Introduction to the Rectangular Coordinate System (9:42)
	4.1.2 - Standard Form of a Linear Equation Part A (3:51)
	4.1.3 - Standard Form of a Linear Equation Part B (6:18)
	4.1.4 - Graphing Linear Equations by Finding Intercepts Part A (6:58)
	4.1.5 - Graphing Linear Equations by Finding Intercepts Part B (3:08)
	4.1.6 - Graphing Horizontal and Vertical Lines (9:13)

Section 4.2

The Slope of a Line

	4.2.1 - The Definition of Slope Part A (4:06)
	4.2.2 - The Definition of Slope Part B (4:52)
	4.2.3 - Determining the Slope of a Linear Equation Part A (7:17)
	4.2.4 - Determining the Slope of a Linear Equation Part B (7:32)
	4.2.5 - Graphing Lines Using the Slope and a Point (5:38)
	4.2.6 - Parallel and Perpendicular Lines Part A (4:41)
	4.2.7 - Parallel and Perpendicular Lines Part B (6:38)

Section 4.3

Linear Equations in Two Variables

	4.3.a - Identifying the Graph Matching An Equation (3:27)
	4.3.1 - Point-Slope Form (7:36)
	4.3.2 - Slope-Intercept Form (4:14)
	4.3.3 - Standard Form (5:14)
	4.3.4 - Finding equations of lines - overview. (1:55)
	4.3.5 - Point-Slope, Slope-intercept & Standard Form. Example when given the slope and a point. (5:03)
	4.3.6 - Example when given two points. (4:23)
	4.3.7 - Parallel & perpendicular Lines: Ex.1 in Point-Slope & Standard Form (4:51)
	4.3.8 - Parallel and perpendicular lines: test questions examples (11:16)
	4.3.9 - Vertical & horizontal lines (2:56)
	4.3.10 - Summary (of all equations in Section 4.3) (1:02)
	4.3.11 - Applications of Lines & Equations: Modeling the purchase of gas and a car wash. (6:31)

Section 4.5

Introduction to Functions

4.5.1 - Relations & Functions (4:58)

4.5.2 - Functions as Ordered Pairs: Examples 1 & 2 (3:13)

4.5.3 - Mapping: Example 1 & 2, Example 3, & Summary of Relations & Functions (5:02)

4.5.4 - Vertical Line Test (4:00)

4.5.5 - Domain & Range (4:13)

4.5.6 - Domain & Range: Graph of Linear Function (2:26)

4.5.7 - Domain & Range Graph of Nonlinear
Function: (1:37)

4.5.8 - Domain & Range Graph of Relation &
Summary: (2:36)

4.5.9 - Notation & Evaluating Functions (7:07)

4.6.0 - Linear Functions: (Graph, Domain, Range) (5:21)

4.6.1 - Application of Linear Function (4:06)