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…
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…
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…
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…
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.
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.
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…
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"…