2x-3y-9z = 21
x+3z = -12
-3x+y-4z = 21

(a) determine whether the system is inconsistent or has infinitely many solutions;
Your answer is infinite (I know this is correct)
(b) if your answer is "infinite" in (a), find the complete solution. Write x and y as functions of z.
x=
y=

Question

2x-3y-9z = 21 
x+3z = -12 
-3x+y-4z = 21 

(a) determine whether the system is inconsistent or has infinitely many solutions; 
Your answer is infinite (I know this is correct)
(b) if your answer is "infinite" in (a), find the complete solution. Write x and y as functions of z. 
x= 
y=

anonymous · Answer

I may have made a mistake, so you should check this answer. http://i.imgur.com/mP7B2SW.png