Curated OER
How Do You Solve a System of Equations Using the Substitution Method?
Watch this video to learn how to find the solution to a system of equations with the substitution method! A teacher will lead you through each step necessary, explaining her steps and the reasoning behind her decisions. After watching...
Curated OER
How Do You Use a System of Linear Equations to Find Coordinates on a Map?
It seems like a pretty complicated word problem in which Batman is trying to locate the Riddler. The instructor does a good job of setting up the two equations that will help Batman locate the Riddler. Two equations? Yes, a system, and...
Curated OER
How Do You Solve a System of Equations by Graphing?
Two equations. What's the solution to this system? How can you solve it? Can you write the two equations in slope-intercept form? Yes, you can. Now graph each equation. Look, the lines intersect. What does that mean? That means that...
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 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: What's Another Way of Solving a System of Equations
There are many different ways to solve a system of linear equations. In this tutorial, you'll see how to solve a system of linear equations by combining the equations together in order to eliminate one of the variables. Then, see how to...
Virtual Nerd
Virtual Nerd: Solve a System of Equations Using Elimination by Multiplication
There are many different ways to solve a system of linear equations. In this tutorial, you'll see how to solve such a system by combining the equations together in a way so that one of the variables is eliminated. Then, see how to find...
Khan Academy
Khan Academy: Systems of Equations Word Problems: Systems and Rate Problems 2
This video demonstrates how to set up and solve a system of equations in order to solve a word problem concerning rates.
Khan Academy
Khan Academy: Systems Overivew: How Many Bags of Potato Chips Do People Eat?
This video shows how to use the elimination method to solve a system of equations.
Khan Academy
Khan Academy: Systems Overivew: King's Cupcakes: Solving Systems by Elimination
An explanation on how to use simple elimination to figure out how many cupcakes are eaten by children and adults.
Sophia Learning
Sophia: Finding Intersections
This video lesson demonstrates how to graph a system of linear equations to find the solution or intersection.
Sophia Learning
Sophia: Identifying Parallel, Intersecting, and Identical Lines
This video lesson demonstrates how to determine if linear equations are parallel, identical, or intersecting. Students can check their understanding with an assessment.
Sophia Learning
Sophia: Using Elementary Row Operations to Solve for Systems of Equations
This video lesson demonstrates how to solve a system of linear equations by using matrix row operations. Students can check their understanding with an assessment.
Sophia Learning
Sophia: Finding Intersections: Lesson 1
This lesson demonstrates graphing two lines on a coordinate plane and determining the point where two lines intersect. It is 1 of 5 in the series titled "Finding Intersections."