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Math Example--Linear Function Concepts--The Equation of a Line Given Two Points: Example 7

Math Example--Linear Function Concepts--The Equation of a Line Given Two Points: Example 7

Graph showing two points (-7, 5) and (-1, 5) with horizontal line

Topic

Linear Functions

Description

This image shows a graph with two points (-7, 5) and (-1, 5). The slope is calculated as zero since the y-values are equal. The equation of the line is horizontal, simplified to y = 5. The slope is 0, indicating a horizontal line. The equation is y = 5.

Linear functions form the foundation of algebraic concepts and have wide-ranging applications in real-world scenarios. This collection of examples serves to reinforce the understanding of linear functions by presenting various cases, including positive and negative slopes, as well as special cases like horizontal and vertical lines. By exploring different situations, students can develop a robust comprehension of determining line equations from given points.

The importance of multiple worked-out examples in mathematics education cannot be overstated. Each example in this collection provides students with an opportunity to practice the steps involved in finding a line's equation, while also exposing them to different scenarios they might encounter. This repetition helps solidify their understanding and builds their confidence in tackling similar problems independently.

Teacher's Script: Let's move on to our seventh example. Here, we have two points: (-7, 5) and (-1, 5). Notice how these points are different from our previous examples. What do you observe about their y-coordinates? That's right, they're the same! This is a special case that results in a horizontal line. Let's see how this affects our equation.

For a complete collection of math examples related to Linear Functions click on this link: Math Examples: Linear Functions Collection.

Common Core Standards CCSS.MATH.CONTENT.8.EE.B.6, CCSS.MATH.CONTENT.8.EE.B.5
Grade Range 6 - 8
Curriculum Nodes Algebra
    • Linear Functions and Equations
        • Point-Slope Form
        • Slope-Intercept Form
Copyright Year 2013
Keywords point-slope form, slope-intercept form, linear equations