# Lectures - 5.3 Formulation and Solution in Three or More Variables

Quiz 5.3 #1 - Solving a system of three equations

Solve the following system of equations:

x – y + z = 3

2x – 2y + z = 7

x – 2y + 3z = 3

Quiz 5.3 #2 - Determining solutions of a system of equations

Which of the following solution best describe the following system of equations?

x – 2y = 3

x + 2y + 2z = 3

x + 6y + 4z = 3

- A. No solution
- B. One solution
- C. Infinite solutions with one arbitrary variable
- D. Infinite solutions with two arbitrary variable