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6.RP.3 - Solve Word Problems Using Tape Diagrams
By MathwithMrAlmeida
In this video, Mr. Almeida shows you how to solve ratio word problems using tape diagrams. The models create equivalent ratios because you are multiplying both quantities in one ratio by the same positive number (the length of 1 unit). This meets Common Core Standard for Mathematics 6.RP.3.
Solving linear systems by graphing | Systems of equations | 8th grade | Khan Academy
By Khan Academy
Solving Linear Systems by Graphing
Ex: Solve a System of Equations by Graphing (Infinite Solutions)
By Mathispower4u
This video demonstrates solving a linear system with infinite solutions.
Graphing Systems of Equations Video: Graphing Systems of Equations
By yourteachermathhelp
This lesson explains how to solve a system of two equations by graphing. The instructor begins by graphing the line for each equation. Then he demonstrates how to find the point of intersection which is the solution for the system.
Graphical systems application problem | Systems of equations | 8th grade | Khan Academy
By Khan Academy
Khan Academy presents Graphical Systems Application Problem, an educational video resource on math.
Graphing systems of equations | Systems of equations | 8th grade | Khan Academy
By Khan Academy
This video describes graphing systems of equations.
Graphically solving systems | Systems of equations | 8th grade
By Khan Academy
This video lecture series on Worked Examples in Algebra from Khan Academy includes Solving Equations, Solving Word Problems, Solving for a variable, Absolute Value and Number Lines, Patterns in Sequences, Functional Relationships, Domain and Range, Rate Problems, Linear Functions, Slope of a Line, X and Y intercepts, Equation of a Line, Parallel Lines, Perpendicular Lines, Solving Inequalities and more..
Systems of Equations Word Problems
By yourteachermathhelp
For a complete lesson on systems of equations word problems, go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to solve number and value word problems using a system of linear equations, as demonstrated in the following problem. Rodolfo has a total of 17 dimes and quarters worth $3.05. How many of each coin does he have? The two variables used in this problem are d, number of dimes, and q, number of quarters. Since Rodolfo has a total 17 dimes and quarters, one equation is d + q = 17. Since the value of his coins is $3.05, the other equation is 10d + 25q = 305. Note that since d represents the number of dimes, 10d represents the value of the dimes. And since q represents the number of quarters, 25q represents the value of the quarters.
Solving Systems of Equations using Substitution
By Mathispower4u
Solving Systems of Equations using Substitution
Graphing Quadratic Equations
By Marc Whitaker
Instructor uses a white board to model graphing quadratic equations. Examples show using quadratic equations in standard form to determine the line of symmetry, create a table of values, and graph the quadratic equation by using these values.
2.3 Quadratic Equations in One Variable Part 1
By Tammy B
Solve quadratic equations in one variable.
Solving a Geometry Word Problem by Using Quadratic Equations - Example 1
By PatrickJMT
Solving a Geometry Word Problem by Using Quadratic Equations - Example 1
Ex: Solve a System of Equations by Graphing (No Solution)
By Mathispower4u
This video demonstrates the three possible solutions of linear systems in a graphical representation.
DEPRECATED Systems of equations word problems
By Khan Academy
Sal solves a word problem about the price of apples and oranges by creating a system of equations and solving it.
Solving Quadratic Equations in one Variable by Factoring
By Victoriamiles
Solve quadratic equations in one variable.
Solving matrix equations
By Khan Academy
Sal shows how a system of two linear equations can be represented with the equation A*x=b where A is the coefficient matrix, x is the variable vector, and b is the constant vector.
Solving equations in terms of a variable
By Khan Academy
Sal solves the equation P=2I+2w for the variable I.
Solve a System of Equations Using Substitution - Infinite Solutions
By Mathispower4u
YouTube presents System of equations - Infinite solutions an educational video resources on math.
Using matrices when solving system of equations
By MathPlanetVideos
The example above in videoformat.