1. Warm-up: Solve the system: 𝑥−2𝑦−𝑧=−5 2𝑥+𝑦+𝑧 =5
𝑥−2𝑦−𝑧=−5 2𝑥+𝑦+𝑧 =5
CW!!!: page 605 (9 – 21 odd)

2. HW Answers: page 605 (1 – 6 all, 8 – 22 even)
1) (1, -2, 4)
2) (2, -3, -2)
3) (1, 2, -2)
4) (8, -2, 6)
5) (1/2, -2, 2)
6) (-2, -10/3, -4)
8) x – 2y + 3z = 5
-x + 3y – 5z = 4
4y – 9z = -10
10) (0, 4, -2)
12) (-2, -11, -10)
14) (1/2, -3/2, 1)
16) Inconsistent
18) (3/10, 2/5, 0)
20) − 1 2 𝑎 , 4𝑎 −1, 𝑎
22) 13 −4𝑎, − 𝑎, 𝑎

3. 𝑥−𝑦+𝑧=0 2𝑥−3𝑦−𝑧=2 −𝑥+2𝑦+3𝑧=−3
Sneedlegrit:
Solve the system:
𝑥−𝑦+𝑧=0 2𝑥−3𝑦−𝑧=2 −𝑥+2𝑦+3𝑧=−3
CW!!!: page 605 (9 – 21 odd)