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sassyj
Group Title
What is the solution of the system? Use substitution.
x = –2y + 10
–6y = 6x – 6
z = –3x + 10y
 2 years ago
 2 years ago
sassyj Group Title
What is the solution of the system? Use substitution. x = –2y + 10 –6y = 6x – 6 z = –3x + 10y
 2 years ago
 2 years ago

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sassyj Group TitleBest ResponseYou've already chosen the best response.0
A. (6, 12) B. (–12, –6) C. (–6, –12) D. (2, 4)
 2 years ago

Aditi_Singh Group TitleBest ResponseYou've already chosen the best response.0
Solve two at a time.
 2 years ago

Callisto Group TitleBest ResponseYou've already chosen the best response.1
1. Label the three equations x = –2y + 10 (1) –6y = 6x – 6 (2) z = –3x + 10y (3) 2. Sub equation (1) into equation (2). Then solve it, you can get the value of y... Hmm... Are you posting the right question?
 2 years ago

sassyj Group TitleBest ResponseYou've already chosen the best response.0
A. x = 9, y = –8, z = 114 B. x = –8, y = 9, z = 114 C. x = –8, y = 114, z = 9 D. x = 114, y = 9, z = –8
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
yeah, now options are correct....
 2 years ago

sassyj Group TitleBest ResponseYou've already chosen the best response.0
I posted the wrong options now, would it be A?
 2 years ago

Callisto Group TitleBest ResponseYou've already chosen the best response.1
How do you get A?
 2 years ago

Aditi_Singh Group TitleBest ResponseYou've already chosen the best response.0
No, it won't be A ..
 2 years ago

Aditi_Singh Group TitleBest ResponseYou've already chosen the best response.0
What did you get on solving the equations? x,y.z?
 2 years ago

Callisto Group TitleBest ResponseYou've already chosen the best response.1
@sassyj Can you solve the first two equations or do you need help?
 2 years ago

sassyj Group TitleBest ResponseYou've already chosen the best response.0
I cant do it
 2 years ago

sassyj Group TitleBest ResponseYou've already chosen the best response.0
I dont get any of thiseven reading the textbook
 2 years ago

Callisto Group TitleBest ResponseYou've already chosen the best response.1
x = –2y + 10 (1) –6y = 6x – 6 (2) z = –3x + 10y (3) Sub equation (1) into equation (2), that means when you see x, replace x by –2y + 10. Do you get this part?
 2 years ago

Callisto Group TitleBest ResponseYou've already chosen the best response.1
So, try it. Sub. (1) into (2), what do you get?
 2 years ago

Callisto Group TitleBest ResponseYou've already chosen the best response.1
If you really don't understand how substitution works, I suggest you to watch a short video on Khan Academy first http://www.khanacademy.org/math/algebra/systemsofeqandineq/v/practiceusingsubstitutionforsystems
 2 years ago
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