SOLUTION: Please help with this Precalculus question which involves row-echelon form. Which of the following demonstrates the coefficient matrix for the system of equations given below?

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Question 1078143: Please help with this Precalculus question which involves row-echelon form.
Which of the following demonstrates the coefficient matrix for the system of equations given below?
system of equations & solutions: https://s9.postimg.org/bowet6f8v/row-e-c.png
Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
.
Hey,
this question DOES NOT involve row-echelon form.

The answer is the option C).

Everybody who has eyes and the brain inside his head can easily answer this question.

I do not understand the reason why you submitted this post.

Only unwilling to think can explain it.