SOLUTION: Hi there! I'm not sure how to even begin to start this question from my homework! Any help would be greatly appreciated. "For the following system to be consistent, -7x - 4y

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Hi there! I'm not sure how to even begin to start this question from my homework! Any help would be greatly appreciated. "For the following system to be consistent, -7x - 4y       Log On


   

Question 1160772: Hi there! I'm not sure how to even begin to start this question from my homework! Any help would be greatly appreciated.
"For the following system to be consistent,
-7x - 4y - 4z = -4
8x - 8y + kz = -6
-5x - 28y -2z = -23
We must have, k not equal _____"
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
The condition under which the system will not be consistent is:
+abs%28matrix%283%2C3%2C+-7%2C-4%2C-4%2C8%2C-8%2Ck%2C-5%2C-28%2C-2%29%29+ = 0

This occurs when k=5 so in order for the system to be consistent highlight%28k%3C%3E5%29