A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution.
2x − y = 5
3x + y = −7
 2 years ago
Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. 2x − y = 5 3x + y = −7

This Question is Closed

Hotskull
 2 years ago
Best ResponseYou've already chosen the best response.0so far i hve 5x=2? this is right

Sujay
 2 years ago
Best ResponseYou've already chosen the best response.1Yup, you got it right so far.

Hotskull
 2 years ago
Best ResponseYou've already chosen the best response.0so, do i hve to divide 2 by 5 now?

Sujay
 2 years ago
Best ResponseYou've already chosen the best response.1Perfect, now substitute it into either equation to come up with the value of the other variable.

Hotskull
 2 years ago
Best ResponseYou've already chosen the best response.0okay so now i have 2(0.4)y=5. den 0.8y=5. dont i add 0.8 to 5? if so i got 4.2? i den plug it into one of the equations 2xy=5 and the answer isnt the same. wat did i do wrong?
Ask your own question
Ask a QuestionFind 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.