Khan Academy
Khan Academy: One Step Division Equations
An introduction to basic algebraic equations of the form ax=b. Check to see if you have the right answer by substituting it for the variable. [11:06]
Khan Academy
Khan Academy: 1 Step Addition/subtraction Equations: Fractions & Decimals
Learn how to solve one-step addition and subtraction equations that have fractions and decimals in them. [4:32]
Khan Academy
Khan Academy: Creating an Equation With Infinitely Many Solutions
Shows how to complete the equation 4(x - 2) + x = 5x + __ so that it has infinitely many solutions. [1:04]
Khan Academy
Khan Academy: Creating an Equation With No Solutions
This Khan Academy tutorial shows how to complete the equation -11x + 4 = __x + __ so that it has no solutions. [1:22]
CK-12 Foundation
Ck 12: Algebra: Direct Variation
[Free Registration/Login may be required to access all resource tools.] Learn how to recognize and write equations of direct variation and try practice exercises. [11:11]
Khan Academy
Khan Academy: A Projection Onto a Subspace Is a Linear Transformation
Showing that a projection onto a subspace is a linear transformation.
Khan Academy
Khan Academy: 3 Variable Linear System Word Problem
Sal solves a word problem about the angles of a given triangle by modeling the given information as a system of three equations and variables.
Khan Academy
Khan Academy: Age Word Problem: Arman & Diya
Sal solves the following age word problem: Arman is 18. Diya is 2. How many years will it take for Arman to be 3 times as old as Diya?
PBS
Pbs Learning Media: Ccmp8 Part 1 Using Repeated Reasoning
Students are taught to look for patterns in solving mathematical problems. Starting in the lower grades, they learn that math problems can be decomposed and recomposed without its value changing (the distributive property). In these...
Khan Academy
Khan Academy: Graphing Linear Equations Harder Example
Watch [3:26] Sal work through a harder Graphing linear equations problem.
Khan Academy
Khan Academy: Graphing Linear Equations Basic Example
Watch [2:37] Sal work through a basic Graphing linear equations problem.
Khan Academy
Khan Academy: Solving Linear Equations and Linear Inequalities Harder Example
Watch [2:52] Sal work through a harder solving linear equations problem.
Khan Academy
Khan Academy: Solving Linear Equations and Linear Inequalities Basic Example
Watch (1.19) Sal work through a basic Solving linear equations problem.
Khan Academy
Khan Academy: Systems of Linear Equations Word Problems Harder Example
Watch [3:21] Sal work through a harder systems of linear equations word problems.
Sophia Learning
Sophia: Finding the Equation of a Line Given Its Slope and a Point: Lesson 3
Write the equation of a line, given its slope and the coordinates of a point on the line including lines parallel to the x- or y-axis. This lesson is 3 of 3 in the series titled "Finding the Equation of a Line given its Slope and a Point."
Sophia Learning
Sophia: Finding the Equation of a Line Given Its Slope and a Point: Lesson 1
Write the equation of a line, given its slope and the coordinates of a point on the line including lines parallel to the x- or y-axis. This lesson is 1 of 3 in the series titled "Finding the Equation of a Line given its Slope and a Point."
Sophia Learning
Sophia: Finding the Slope of a Line From an Equation: Lesson 1
Given the equation of a line, this lesson shows how to find the slope. It is 1 of 11 in the series titled "Finding the Slope of a Line from an Equation."
Sophia Learning
Sophia: Shifting Left to Right: Lesson 3
The shifting of a function to the left or right on a graph is shown in this lesson. It is 3 of 11 in the series titled "Shifting Left to Right."
Sophia Learning
Sophia: Shifting Left to Right: Lesson 4
The shifting of a function to the left or right on a graph is shown in this lesson. It is 4 of 11 in the series titled "Shifting Left to Right."
Sophia Learning
Sophia: Shifting Left to Right: Lesson 6
The shifting of a function to the left or right on a graph is shown in this lesson. It is 6 of 11 in the series titled "Shifting Left to Right."
Sophia Learning
Sophia: Shifting Left to Right: Lesson 8
The shifting of a function to the left or right on a graph is shown in this lesson. It is 8 of 11 in the series titled "Shifting Left to Right."
Sophia Learning
Sophia: Shifting Left to Right: Lesson 1
The shifting of a function to the left or right on a graph is shown in this lesson. It is 1 of 11 in the series titled "Shifting Left to Right."
Sophia Learning
Sophia: Slope in Perpendicular Lines: Lesson 1
The relationship between slopes of perpendicular lines is discussed in this lesson. It is 1 of 6 in the series titled "Slope in Perpendicular Lines."
Sophia Learning
Sophia: Slope Intercept Formula: Lesson 1
This lesson introduces the slope intercept form of a linear equation. It is 1 of 6 in the series titled "Slope Intercept Formula."