Cool Down
Graphing technology should not be used in this cool down.
Use this linear equation to answer questions 1 - 2.
Which would be a more helpful method for solving the system?
The answer is to add the two equations.
Explain or show how you know.
Compare your answer:
Your answer may vary, but here is a sample. , so adding the equations would eliminate the -variable and enable solving for .
Solve the system without graphing to answer questions 3 – 5.
Identify the coordinate of the solution.
Compare your answer:
or equivalent
Identify the coordinate of the solution.
8.
Explain or show your reasoning.
Compare your answer:
Your answer may vary, but here is a sample.
Video: Determining the Best Method for Solving a System of Equations
Watch the following video to learn more about finding the best method to solve a system of equations.