



Reasoning: How do you decide whether substitution is the best method to solve a system in three variables? You may use the canvas to help illustrate your response.
Error Analysis: A classmate says that the system consisting of x = 0, y = 0, and z = 0 has no solution. Explain the student's error.
Writing: How many solutions does this system have? Hint: Is the system dependent? inconsistent?
Explain your answer in terms of intersecting planes.

Visualize: The graph of a system is shown here. How many solutions does this system have? Explain.
Reflection: Math Success