Sophia Learning
Sophia: Writing Equations With a Variable
Explore how to translate a word problem into a mathematical equation.
Khan Academy
Khan Academy: Algebra I: Constructing and Solving Multi Step Inequality Example
The video examines writing and using inequalities. Students watch an example on how to use an inequality to solve a word problem about a cellphone plan. [6:40]
Khan Academy
Khan Academy: Algebra I Examples: Graphing Systems of Inequalities 3
The detailed example examines systems of inequalities. Students watch a video example on how to graph the solution set of systems of inequalities to solve a word problem. [9:45]
Khan Academy
Khan Academy: Basic Linear Equation Word Problems
In this video lesson students learn to translate a word problem into a linear equation and then solve it using inverse operations.
PatrickJMT
Patrick Jmt: An Introduction to Solving Inequalities Ex 1
Video tutorial provides an introduction to solving inequalities. Reminder-if you multiply or divide by a negative number, the inequality flips direction. [2:40]
Art of Problem Solving
Art of Problem Solving: Solving Linear Inequalities
Video tutorial uses examples to reinforce understanding of how to solve linear inequalities. [7:44]
Imagine Learning Classroom
Learnzillion: Solve Inequality Word Problems
In this lesson you will learn how to solve word problems by using inequalities. [4:42]
Loyola University Chicago
Math Flix: Solving Coin Riddles W/ Algebra Part 2
This QuickTime movie provides an opportunity to practice solving coin riddles using Algebra. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Khan Academy
Khan Academy: Number of Solutions to a System of Equations
Sal is given three lines on the coordinate plane, and identifies one system of two lines that has a single solution, and one system that has no solution. [3:26]
Khan Academy
Khan Academy: Number of Solutions to a System of Equations Graphically
Sal determines how many solutions the following system of equations has by considering its graph: 10x-2y=4 and 10x-2y=16. [6:36]
Khan Academy
Khan Academy: Number of Solutions to a System of Equations Algebraically
Sal solves several examples where he reasons about the number of solutions of systems of equations using algebraic reasoning. [6:01]
Sophia Learning
Sophia: Applications of Compound Inequalities
Here we look at how to relate compound inequalities to real world problems.
Sophia Learning
Sophia: Applications of Compound Inequalities
Here we look at how to relate compound inequalities to real world problems.