Question

Find the solution to the system of equations represented by the matrix shown below.

7 4 -1 |32
4 1 -3 |-10
1 2 1|22

A.x = 3, y = 5, z = 9
B.x = 9, y = 7, z = 9
C.x = 3, y = 1, z = -7
D.x = 52, y = 5, z = 15

Answer 1

using gauss-jordan elimination (or guessing)

a.

Answer 2

A