$($T$/$F$)$ Every elementary row operation is reversible.

$($T$/$F$)$ Elementary row operations on an augmented matrix

s correct

never change the solution set of the associated linear system.

original

$($T$/$F$)$ A $56$ matrix has six rows.

$($T$/$F$)$ Two matrices are row equivalent if they have the same number of rows.

$($T$/$F$)$ The solution set of a linear system involving variables

is correct

e original

$x_1,$dots,$x_n$ is a list of numbers $(s_1,$dots,$s_n)$ that makes each equation in the system a true statement when the values $s_1,$dots,$s_n$ are substituted for $x_1,$dots,$x_n,$ respectively.

is correct

$($T$/$F$)$ An inconsistent system has more than one solution.

e original

$($T$/$F$)$ Two fundamental questions about a linear system involve existence and uniqueness.

istent. Do

$($T$/$F$)$ Two linear systems are equivalent if they have the same solution set.