Graphing Linear Equations

🍀 Welcome to our Bite-Size VIDEO Tutorials for GRAPHING LINEAR EQUATIONS!

[FULL Tutorial] Mastering How to Graph Linear Equations

  • 🎯 Need to master or review the topic quickly? ▶️ Click here to watch the VIDEO tutorial [⏳14:20]
  • 🔧 This video covers:
    ① Rectangular Coordinate System
    ② Graphing Linear Equations
    ③ Slope and Intercepts
    ④ Parallel/Perpendicular Lines
    ⑤ Horizontal/Vertical Lines

Using the Rectangular Coordinate System

[Bite-Size Tutorial] Mastering the Rectangular Coordinate System

  • ▶️ Click here to watch the VIDEO tutorial [⏳1:04]
  • 📌 What is Rectangular Coordinate System? ➜ In algebra, a grid system is used to show a relationship between two variables (like 𝑥 and 𝑦).
  • 📌 What are Quadrants? ➜ The 𝑥-axis and 𝑦-axis divide the rectangular coordinate system into four regions (I – IV).
  • 📌 Every point in the system is represented by an Ordered Pair.
    ➜ The first number in the pair is the 𝑥-coordinate of the point, and the second number is the 𝑦-coordinate of the point.
  • 📌 What is Origin? ➜ The point (0, 0), where the 𝑥-axis and 𝑦-axis intersect.

Plot each point:

Plot each point:

  • ▶️ Click here to watch the VIDEO tutorial [⏳1:46]
  • ✏️ If 𝑥 = 0, the point is on the 𝑦-axis.
  • ✏️ If 𝑦 = 0, the point is on the 𝑥-axis.
  • ✏️ Point (0, 0) Origin, where the 𝑥-axis and 𝑦-axis intersect.

Which ordered pairs are solutions to the equation 𝑥 + 4𝑦 = 8 ?

  • ▶️ Click here to watch the VIDEO tutorial [⏳ 1:44]
  • ✏️ Substitute the 𝑥- and 𝑦-values of the ordered pair into the equation ➜ Is the equation a true statement ? ➜ If it is true, the number is a solution. If it is not true, the number is not a solution.

Graphing Linear Equations in Two Variables

[Bite-Size Tutorial] Mastering How to Graph Linear Equations by Plotting Points

Graph by plotting points:

Graph by plotting points:

Graph by plotting points:

Graph by plotting points:

Graph by plotting points:

Graph by plotting points:

Graph by plotting points:

  • ▶️ Click here to watch the VIDEO tutorial [⏳1:13]
  • ✏️ Only one variable (𝑦) ➜ 𝑦 is always equal to −1.
  • ✏️ This is a horizontal line passing through the 𝑦-axis at −1.
  • ▶️ Click here to watch the VIDEO tutorial [⏳3:01]
  • ✏️ To graph 𝑦=−3𝑥, find three points whose coordinates are solutions, plot the points, and draw a line through the points.
  • ✏️ The equation 𝑦=−3 has only one variable (𝑦) ➜  This is a horizontal line passing through the 𝑦-axis at −3.

Graphing with Intercepts

[Bite-Size Tutorial] Mastering How to Graph Linear Equations Using Intercepts

  • 📌 What is 𝑥-intercept? ➜ the point where the line crosses the 𝑥-axis. It has the form (𝑎, 0).
  • 📌 What is 𝑦-intercept? ➜ the point where the line crosses the 𝑦-axis. It has the form (0, 𝑏).

Graph using the intercepts:

Graph using the intercepts:

Graph using the intercepts:

Graph using the intercepts:

Understanding Slope of a Line

[Bite-Size Tutorial] Graphing Linear Equations Using Slope and Intercept

Using the Slope-Intercept Form of Equation of Line

Graph using the slope and 𝑦-intercept:

Graph using the slope and 𝑦-intercept:

Graph using the slope and 𝑦-intercept:

Graph using the slope and 𝑦-intercept:

Graph using the slope and 𝑦-intercept:

Graph using the slope and 𝑦-intercept:

Graph using the slope and 𝑦-intercept:

[Bite-Size Tutorial] Mastering Linear Equations with Horizontal/Vertical Lines

[Bite-Size Tutorial] Mastering Linear Equations with Parallel/Perpendicular Lines

Determine if the lines are parallel or perpendicular:

Determine if the lines are parallel or perpendicular:

Determine if the lines are parallel or perpendicular:

Determine if the lines are parallel or perpendicular:

Determine if the lines are parallel or perpendicular:

Determine if the lines are parallel or perpendicular:

Determine if the lines are parallel or perpendicular:

Finding the Equation of Line

  • ▶️ Video coming soon! 
  • ▶️ Video coming soon! 
  • ▶️ Video coming soon! 

Graphs of Linear Inequalities (Coming Soon)

Graph the linear inequality:

  • ▶️ Video coming soon! 

Graph the linear inequality:

  • ▶️ Video coming soon! 

Graph the linear inequality:

  • ▶️ Video coming soon! 

Graph the linear inequality:

  • ▶️ Video coming soon! 
More Algebra Topics