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# re edited questions

(20) points.
(Section 1.1)
20 points
1. Use the parametric equations to describe the solution sets of the given linear
systems.
6.x1 + 212 = -8
a.
3x1 + 12 = -4
2x - y + 22 = -4
b.
6x - 3y + 6z = -12
-4x + 2y - 42 = 8
(Section 1.2)
20 points
2. Solve the given linear system by both Gaussian and Gauss-Jordan elimination.
-26 + 3c = 1
3a + 66 - 3c = -2
6a + 66 + 3c = 5
(Section 1.3)
20 points
3. Reduce the given matrix to reduced echelon form without introducing fractions
at any intermediate stage.
2
3
0
-2
-29
3
5

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