Curated OER
What's a Solution to a System of Linear Equations?
Since the focus of this video is on explaining the solution to a system of equations, the lecturer does not work through the problem. Instead, she points out that the solution should be an ordered pair that makes each equation a true...
Curated OER
What's a System of Linear Equations?
What is a system of equations? To put it simply, it's a set of equations with the same variables. If the equations happen to be linear equations, then it's a system of linear equations. Systems of equations can be solved, but that's...
Curated OER
How Do You Solve a Word Problem Using Two Equations?
Two equations and two unknown variables in a word problem. Don't cry! Follow the instructor through these nine steps to find the solutions. Identify the variables, write the equations, solve for one of the variables, use the substitution...
Curated OER
What's an Example of a Word Problem That Has a System of Linear Equations with Infinite Solutions?
How can a math problem have an infinite number of solutions? No way! There has to be just one answer. Follow along as the instructor walks you through this explanation and shows you how a math problem can have an infinite number of...
Curated OER
How Do You Solve a Word Problem Using the Elimination by Subtraction Method?
Use word problems to teach systems of equations! The instructor in this video demonstrates how to solve a word problem using a system of equations and the elimination by subtraction method. She goes through each step, carefully...
Curated OER
How Do You Solve a System of Equations Using the Elimination by Addition Method?
How can a value of x and y satisfy a solution to two equations? It doesn't seem possible. Given a system of linear equation, find a solution that satisfies both equations. It can be done. In this video, the instructor demonstrates how to...
Curated OER
How Do You Solve an Opposite-Direction Travel Problem?
The quintessential word problem that makes everyone scream and run away. But wait, come back! Time, distance, when will they get there? You are really only working with one formula: distance= rate times time. You can do this. View this...
Curated OER
What's a Solution to a System of Linear Equations?
Since the focus of this video is on explaining the solution to a system of equations, the lecturer does not work through the problem. Instead, she points out that the solution should be an ordered pair that makes each equation a true...
Virtual Nerd
How Do You Solve a More Complicated Interest Problem?
This word problem on simple interest has a bit of a twist. When you read this word problem it boggles the mind. I know, it boggled mine. But never fear, the instructor takes you through this seemingly complicated interest problem...
Virtual Nerd
Virtual Nerd: How Do You Graph a System of Equations
In this video lesson students learn how to graph a system of equations that has no solution.
Sophia Learning
Sophia: Graph of Solutions to Simultaneous Equations
This website provides a tutorial video for students to learn how to determine the number of solutions a system of equation has by examining the graph of the system. After reviewing the video tutorial students can then attempt practice...
Sophia Learning
Sophia: Graph of Solutions to Simultaneous Equations
This website provides a tutorial video for students to learn how to determine the number of solutions a system of equation has by examining the graph of the system. After reviewing the video tutorial students can then attempt practice...
Sophia Learning
Sophia: Simplifying an Equation: Lesson 1
From this lesson, you will discover how to make an equation easier to solve by applying simplifying rules to equations. It is 1 of 12 in the series titled "Simplifying an Equation."
Khan Academy
Khan Academy: Algebra: Ca Algebra 1: Systems of Inequalities
This video demonstrates how to solve several test questions related to systems of equations and systems of inequalities. [12:56]
Khan Academy
Khan Academy: Algebra: Special Types of Linear Systems
This video demonstrates examples of special systems of equations that either have no solution or an infinite number of solution. These types of systems are called consistent or inconsistent systems. [15:18]
Khan Academy
Khan Academy: Algebra: Officer on Horseback
This video demonstrates how to set up and solve a system of equations in order to answer a question posed in a word problem. The solution utilizes the equation d=rt. [8:54]
Khan Academy
Khan Academy: Algebra: Systems of Equations
This video demonstrates how to solve systems of linear equations in two variables using the elimination method. There are three sample problems shown. [9:57]
Khan Academy
Khan Academy: Algebra: Testing a Solution for a System of Equations
This video demonstrates how to test a solution for a system of equations by substituting the values back into each equations. [2:38]
Khan Academy
Khan Academy: Algebra: Independent and Dependent Systems
This video demonstrates what it means to be a dependent or independent system of linear equations. It also shows how to determine if a given system is dependent or independent. [5:10]
Khan Academy
Khan Academy: Graphically Solving Systems
In this video lesson students learn to solve systems of equations by the graphing method. After graphing, students then determine the number of solutions the system has by looking at the intersection of the lines.
Khan Academy
Khan Academy: Algebra: Consistent and Inconsistent Systems
This video demonstrates what it means to be a consistent or inconsistent system of equations and how to determine if a given system is consistent or not. [5:28]
PBS
Wnet: Thirteen: Get the Math: Math in Special Effects Teams Solved the Challenge
The teams use a light probe and tape measure to record light intensity at different distances from the source. They then examine the data and use different methods to represent the mathematical relationship between light intensity and...
Sophia Learning
Sophia: Simplifying an Equation: Lesson 5
From this lesson, you will discover how to make an equation easier to solve by applying simplifying rules to equations. It is 5 of 12 in the series titled "Simplifying an Equation."
Sophia Learning
Sophia: Simplifying an Equation: Lesson 7
From this lesson, you will discover how to make an equation easier to solve by applying simplifying rules to equations. It is 7 of 12 in the series titled "Simplifying an Equation."