Posted by **julia** on Tuesday, June 17, 2014 at 10:39pm.

Determine whether the system of equation is in row-echelon form.

x-y+3z=-11

y+8z=-12

z=-2

- math -
**Steve**, Tuesday, June 17, 2014 at 10:49pm
Arrange the coefficients into a 3x3 matrix, filling in zeros for missing values.

A matrix is in row echelon form if

(1) All nonzero rows (rows with at least one nonzero element) are above any rows of all zeroes (if any).

(2) The leading coefficient of a nonzero row is always strictly to the right of the leading coefficient of the row above it.

(3) All entries in a column below a leading entry are zeroes (implied by the first two criteria).

What do you think?

## Answer this Question

## Related Questions

- MaTh.. - Determine whether the system of equations is in row-echelon form. x-y+...
- Math - Put this matrix in Reduced Row Echelon Form. Make sure that you list the ...
- Math - Put this matrix in Reduced Row Echelon Form. Make sure that you list the ...
- Math - The reduced row echelon form of the matrix -1/2 1/2 3/2 -3/2 2 3/2 1/2 -3...
- Math - The reduced row echelon form of the matrix -1/2 1/2 3/2 -3/2 2 3/2 1/2 -3...
- mathematicas - how do you write the matrix: 1 2 -1 | 3 7 -1 0 | 2 3 2 1 | -1 in ...
- math,algebra II - I need someone to explain to me step by step the process of ...
- Mathematics - 3x-3y=12 3x+2y=-3 2x+y=4 Solve each by reduced row echelon form ...
- Algebra 2/Trig - Solving Multivariable Linear Systems: 3x-5y+5z = 1 5x-2y+3z = 0...
- Linear Algebra - The nullspace of a 3 by 4 matrix A is the line through (2,3,1,0...