What's the Slope of a Line?

Slope of a Line 1

Slope of a Line 2

What Are Intercepts?

Intercepts 1

Intercepts 2

Finding the Equation of a Line: The Point-Slope Form

The Point-Slope Form 1

The Point-Slope Form 2

The Point-Slope Form 3

Finding the Equation of a Line: The Slope-Intercept Form

The Slope-Intercept Form 1

The Slope-Intercept Form 2

The Slope-Intercept Form 3

Vertical and Horizontal Lines

Vertical and Horizontal Lines 1

Parallel Lines

Parallel Lines 1

Parallel Lines 2

Perpendicular Lines

Perpendicular Lines 1

Perpendicular Lines 2

Solving Equations: The Substitution Method

The Substitution Method 1

The Substitution Method 2

Solving Equations: The Addition Method

The Addition Method 1

The Addition Method 2