Solve Linear System by Substitution
Description – With a verbal investment problem a linear system of equations is developed. A solution is developed using a substitution method. A four step procedure for solving linear systems by substitution is developed. Several examples are developed using the procedure.
Activities – Multimedia Tutorial
Objectives
- From a verbal model writing a linear equation
- Identify the rate in a verbal model
- Identify slopes as the rate in a verbal model
- Identifying the variable in a verbal model
- Writing a linear equation of form ax + by = c
- Write systems of equations in two variables from verbal model
- Solving one equations for one variable
- Substitute solution into second equation and solving
- Using substation for solving for second variable
- Checking solution
Tags
system of linear equations, word problems, solve by graphing, solve by substitution, linear combination
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