Use a graphing calculator or spreadsheet software to solve 4x + y + z = 1
8x – 4y – 7z = 2
5y + 9z = 3
using matrices.

Question

Use a graphing calculator or spreadsheet software to solve 4x + y + z = 1
8x – 4y – 7z = 2
5y + 9z = 3
using matrices.

directrix · Answer

I used this online Program: To solve a system of linear equations by Matrix solution online http://onlinemschool.com/math/assistance/equation/matr/ The matrix solution is explained. The answers to the system are given. Try it and post what you get, okay.

directrix · Answer

@happyturtle3

jim_thompson5910 · Answer

the linear algebra toolkit http://www.math.odu.edu/~bogacki/lat/ shows you how to solve this using row reductions. Let me know if you need help on working the website