• Support PF! Buy your school textbooks, materials and every day products Here!

Can I get a jump start in solving this

  • Thread starter dr_pooool
  • Start date
  • #1
dr_pooool
Determine whether the following system is independent, inconsistent, or dependant.
3x – 4y = 8

0.75x – y = -2
 

Answers and Replies

  • #2
HallsofIvy
Science Advisor
Homework Helper
41,833
955
Are you saying that you do not know what "independent", "dependent", or "inconsistent" mean? I think you would be better served by looking up the definitions yourself in your text book.

There are a number of ways of determining whether or not a system of equations is "independent" or "consistent" but the simplest is to try to solve the equations and see what happens.
 
  • #3
dr_pooool
Is this correct?

3x – 4y = 8
.75x - y = -2
so,
-4(0.75x – y) = (-2)-4
-3x + 4y = 8
0=16 This is inconsistent
 
  • #4
HallsofIvy
Science Advisor
Homework Helper
41,833
955
Yep, you've got it!!
 

Related Threads on Can I get a jump start in solving this

  • Last Post
Replies
1
Views
2K
Replies
4
Views
2K
  • Last Post
Replies
9
Views
6K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
7
Views
1K
  • Last Post
Replies
1
Views
4K
Replies
1
Views
1K
Replies
21
Views
2K
Top