Question 1 of 5: Solve, give the matrix in reduced reduced-row echelon form
Select the Correct Answer: Correct! 
Not Correct! 
Not Correct! A
$$(0,-2,4)$$ $$\left[ \begin{array}{ccc|c}1&0&0&0\\ 0&1&0&-2\\ 0&0&1&4 \end{array}\right] $$
B
$$(9,1,-2)$$ $$\left[ \begin{array}{ccc|c}1&0&0&9\\ 0&1&0&1\\ 0&0&1&-2 \end{array}\right] $$
C
No Solution
D
$$(-5,-2,-1)$$ $$\left[ \begin{array}{ccc|c}1&1&1&-5\\ 0&1&1&-2\\ 0&0&1&-1 \end{array}\right] $$
E
$$(0,1,-4)$$ $$\left[ \begin{array}{ccc|c}1&1&1&0\\ 0&1&1&1\\ 0&0&1&-4 \end{array}\right] $$
Question 2 of 5: Solve, give the matrix in reduced reduced-row echelon form
Select the Correct Answer: Correct! Not Correct!
Not Correct! A
$$(2,3,3)$$ $$\left[ \begin{array}{ccc|c}1&0&0&2\\ 0&1&0&3\\ 0&0&1&3 \end{array}\right] $$
B
No Solution
C
$$(5,9,-7)$$ $$\left[ \begin{array}{ccc|c}2&0&0&1\\ 0&9&0&0\\ 0&0&-7&1 \end{array}\right] $$
D
$$(6,2,-2)$$ $$\left[ \begin{array}{ccc|c}1&1&0&6\\ 1&0&0&2\\ 0&0&0&-2 \end{array}\right] $$
E
$$(-5,-5,5)$$ $$\left[ \begin{array}{ccc|c}-5&1&0&0\\ -5&0&1&0\\ 5&0&0&1 \end{array}\right] $$
Question 3 of 5: Solve, give the matrix in reduced reduced-row echelon form
Select the Correct Answer: Correct! Not Correct!
Not Correct! A
No Solution
B
$$(10,15,8)$$ $$\left[ \begin{array}{ccc|c}1&0&0&10\\ 0&1&0&15\\ 0&0&1&8 \end{array}\right] $$
C
$$(6,5,-9)$$ $$\left[ \begin{array}{ccc|c}6&1&0&0\\ 5&0&1&0\\ -9&0&0&0 \end{array}\right] $$
D
$$(-2,0,-1)$$ $$\left[ \begin{array}{ccc|c}1&0&0&-2\\ 0&1&0&0\\ 0&0&1&-1 \end{array}\right] $$
E
$$(-4,-3,2)$$ $$\left[ \begin{array}{ccc|c}-4&0&0&1\\ 0&-3&0&1\\ 0&0&2&1 \end{array}\right] $$
Question 4 of 5: Solve, give the matrix in reduced reduced-row echelon form
Select the Correct Answer: Correct! Not Correct!
Not Correct! A
$$(0,0,1)$$ $$\left[ \begin{array}{ccc|c}1&0&0&0\\ 0&1&0&0\\ 0&0&1&1 \end{array}\right] $$
B
$$(2,7,3)$$ $$\left[ \begin{array}{ccc|c}1&0&0&2\\ 0&1&0&7\\ 0&0&1&3 \end{array}\right] $$
C
$$(-1,-3,-5)$$ $$\left[ \begin{array}{ccc|c}1&0&0&-1\\ 0&1&0&-3\\ 0&0&1&-5 \end{array}\right] $$
D
No Solution
E
$$(13,-1,0)$$ $$\left[ \begin{array}{ccc|c}13&0&0&1\\ -1&1&0&0\\ 0&0&1&1 \end{array}\right] $$
Question 5 of 5: Solve, give the matrix in reduced reduced-row echelon form
Select the Correct Answer: Correct! Not Correct!
Not Correct! A
$$(19,10,6)$$ $$\left[ \begin{array}{ccc|c}19&1&0&0\\ 0&10&1&0\\ 0&0&6&1 \end{array}\right] $$
B
$$(11,-12,1)$$ $$\left[ \begin{array}{ccc|c}11&0&0&0\\ -12&1&0&0\\ 1&0&1&0 \end{array}\right] $$
C
$$(1,6,-3)$$ $$\left[ \begin{array}{ccc|c}1&0&0&1\\ 0&1&0&6\\ 0&0&1&-3 \end{array}\right] $$
D
$$(7,8,4)$$ $$\left[ \begin{array}{ccc|c}1&0&0&7\\ 0&1&0&8\\ 0&0&1&4 \end{array}\right] $$
E
No Solution
