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Looks at the three types of graphs that can occur with a system of two linear equaltions in two variables.
Classifying systems of linear equations from…
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This demonstrates testing possible answers to a system of two equations to see whether they are truly answers or not. Note that each answer has to work for both…
Identifying solutions to a system of linear…
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Demonstates how to interpret a graph of a system of functions so that common questions that someone might have can be answered.
Interpreting the graphs of two functions
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Rate X Time = Distance problems are best organized by making a table with the columns labeled with the parts of the formula r x t = d and the different scenarios…
Solving a distance, rate, time problem using a…
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This video shows the third method for solving a system of linear equations - Elimination
Solving a System by Elimination
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This video demonstrates the substitution method for solving a system of two equations in two variables. There is a second video that shows a different aspect of this…
Solving a System by Substitution, Part 1
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This is a second demonstration of the substitution method for solving a system of two equations in two variables.
Solving a System of Equations by Substitution,…
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This video demonstrates how to solve a system of two equations in two variables by graphing them.
Solving a System of Linear Equations by Graphing
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This talks about why we need two equations to solve for two unknown values, and then demonstrates how to add two equations together to eliminate one varaible and solve…
Solving a system of linear equations using…
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Demonstrates how to read and understand the description so that equation can be made for a 2X2 system, then solve the system using and appropriate method.
Solving a value mixture problem using a system of…
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This demo discusses how to set up two equations to solve the situation described, and then choose the best method to use to solve for each of the variables.
Solving a word problem involving a sum and…
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Talks about how to interpret the words to create two equations, then solves them together using the elimination method, making opposites of one variable's terms sot…
Solving a word problem using a system of linear…
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A word problem that needs two equations using 2 variables to solve it.
Solving Problems Modeled by Systems of Two…
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This video applies the techniques learned about systems of equations to a cost vs. revenue situation in business allowing the student to find the "break-even"…
Solving Problems with Cost and Revenue Functions
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