Khan Academy
SAT Prep: Test 5 Section 3 Part 2
Going over the last problem from the previous video (problem 5), Sal explains his thought process more carefully. Additionally, he solves problems involving measuring angles, algebraic expressions, and averages.
Curated OER
How Do You Solve a Polynomial Equation With Two Variables?
Sometimes you'll need to solve an equation with multiple variables on each side. This step-by-step tutorial will show you how to set your equation to 0, factor out the GCF, simplify, write your answers as a set, then plug and chug to...
Curated OER
How Do You Write an Absolute Value Inequality from a Word Problem?
Use this word problem to practice turning words into math. You'll follow the step-by-step process to determine what is being asked and what you'll need to do to solve the problem. A great tutorial for learners needing a little extra help...
Curated OER
How Do You Write an Equation for a Vertical Line?
To find the equation of a vertical line you need to use x=b to determine the equation. This tutorial explains the use of formula x=b to find a value for an unknown y. The explanation of this concept is rushed making this tutorial only...
Curated OER
Holes in Rational Equations
When you have a hole in a graph it means that both the numerator and denominator equaled 0 in an equation. So what does that mean? Learners can brush up on this graphing concept and feel OK when they realize a hole in a graph is just a...
Curated OER
Factoring Quadratic Polynomials
Learn how to factor the quadratic polynomial ax(squared)+bx+c, where (a) does not equal 1. This quick algebra lesson focuses on using the "bottoms up" method to factor this polynomial. The instructor uses an interactive whiteboard to...
Curated OER
How a Capacitor Works
A capacitor stores energy in the form of an electric charge. See a circuit diagram explaining charges and electron flow. Equations are given for energy and a capacitor is made. Show this to your physics or beginning electronics class.
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 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
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
Algebra - Linear Equations in One Variable - Ch. 2.1
Ever have a math teacher that gives you a property or rule but doesn't give you any way to remember it? Well he just made a math tutorial. This video does provide examples and shows the addition and multiplication property of equations...
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...