Unit 1 Lesson 1.07: Unit Test (Part 2) September 10, 2021 NAME
DATE
Points (12)
Be sure to SHOW YOUR WORK
*This must be printed out and handwritten to be accepted!
1.) Using Desmos or linear combination method on a scratch piece of paper, solve the system of equations
below. State your answer in the form (x, y, z). In the area below prove mathematically this answer is
correct. All steps need to be shown to earn full credit. (6 points)
2x – y + z = 7
2x + 4y – 2z = 0
x - y + 3z = 2