Video Definition 9--Linear Function Concepts--The Equation of a Line From Two Coordinates

Topic

Linear Functions

Description

The term is "The Equation of a Line from Two Coordinates," defined as deriving the equation of a line in slope-intercept form from two given points. The slope is calculated as m = (y₂ - y₁) / (x₂ - x₁), and the equation is written as y - y₁ = m(x - x₁). This term builds the connection between points on a graph and their corresponding linear equation, demonstrating practical derivations.

Linear functions form the backbone of many mathematical concepts. They are essential for understanding relationships that have constant rates of change. This video introduces the concept thoroughly, making it accessible for students.

As a teacher, you can start by explaining that this video will provide clear visuals and definitions that clarify what linear functions represent. For example, the video includes detailed examples showing how a linear function is expressed graphically and algebraically, tying in mathematical notation with practical applications. This connects directly to the concept of rates of change and the proportionality inherent in linear functions.

Teacher’s Script: "Today, we’re exploring the foundation of many real-world relationships: linear functions. The video you’ll watch explains how we can understand these functions as both graphs and equations. Pay attention to how the terms are defined and visualized. Think about how this connects to what we’ve discussed regarding patterns and rates of change in prior lessons. Let’s identify how linearity simplifies the representation of data points into a consistent form."

For a complete collection of videos related to Linear Functions click on this link: Math Video Definitions: Linear Functions Collection.