Page 3: Axis Intersections and Distance Calculations

The content focuses on finding where lines intersect with axes and calculating distances between points using the distance formula.

Definition: The distance formula between two points is √((x₂-x₁)² + (y₂-y₁)²)

Example: Finding intersection points A(0,8) and B(-12,0) with the axes.

Highlight: The midpoint calculation (-6,4) is shown as an important step in solving geometric problems.

Page 4: Complex Line Relationships

This page covers more advanced concepts involving multiple lines and their relationships, including perpendicular lines and intersection points.

Definition: Perpendicular lines have gradients that are negative reciprocals of each other.

Example: Solving systems of equations to find intersection points.

Highlight: The transformation of equations from general form to slope-intercept form is demonstrated.

Page 1: Linear Equations and Gradients

This page introduces fundamental concepts of linear equations and gradient calculations. The content focuses on working with different forms of linear equations and understanding the relationship between lines.

Definition: The point-slope form of a line is y - y₁ = m(x - x₁), where m is the gradient and (x₁,y₁) is a point on the line.

Example: A gradient calculation is shown where m = (y₂-y₁)/(x₂-x₁) = -3

Highlight: The relationship between perpendicular lines is demonstrated through their negative reciprocal gradients.

Vocabulary: Gradient (m) represents the slope or steepness of a line.