A community for students.
Here's the question you clicked on:
 0 viewing
ValentinaT
 2 years ago
Using substitution, could someone please help me with this system?
–y + 3x = 6
y = –6x + 12
So far I've gotten:
Substituting the second equation into the first you get
(6x+12) + 3x = 6
Which can be solved for x after finding x you can use the second equation above directly to find y
ValentinaT
 2 years ago
Using substitution, could someone please help me with this system? –y + 3x = 6 y = –6x + 12 So far I've gotten: Substituting the second equation into the first you get (6x+12) + 3x = 6 Which can be solved for x after finding x you can use the second equation above directly to find y

This Question is Closed

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1Sounds like you know what you are doing .... What's the problem you are having?

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Well, I had help with that part, but I can't figure out what to do next. I tried using my textbook, but it was a bit confusing, because they showed you what to do, but didn't explain it.

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1Ok, first let's distribute that (6x+12) Can you do that?

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1Think of it this way: ()(6x) & ()(12)

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Because negative times negative equals a positive 6x + 12?

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1yes, very good so we have 6x12+3x=6 What will you do next?

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1correct 9x12=6 now what?

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Substitute for y from the other equation?

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1Let's try to solve for x.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Sorry, I was looking at my textbook, and thought that we were onto that step.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Okay, so how would I go about solving for x? Also, thank you for the medal.

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1We have x on one side, can we get non xvalues on the other side?

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1You would add 12 + 6? Then get 18, divided by 9x would equal 2.

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1What are you going to do with that x=2?

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Substitute 2 for x in either equation and solve for y? Sorry, my computer is slow sometimes.

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1Heh I Understand. You are correct, good job!

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Thank you! So, y + 3(2) + 6.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1What would I do next?

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1same that you did when you had 9x12=6 and solved for x. now we are going to it for y

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.16  6 = 0 So y, would be 0?

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Then I would substitute 0for y, and get 0 + 6 = 6.

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1Correct: So your Answer is: X=2, y=0

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1As long as you get a correct statement when you plug them both back in, like you showed 6=6 and not get something like 7=6, then we would have a problem.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1Okay, thank you some much for your help. If I could give you more than one medal I would.

MathDad72
 2 years ago
Best ResponseYou've already chosen the best response.1Thank you, It is nice to meet someone who wants to work out the problems and not just demand an answer.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.1I get what you mean, you are a very good teacher by the way.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.