Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Determine the number of solutions of the system of linear equations without writing the equations in slope intercept form. Explain.
 one year ago
 one year ago
Determine the number of solutions of the system of linear equations without writing the equations in slope intercept form. Explain.
 one year ago
 one year ago

This Question is Closed

JakeV8Best ResponseYou've already chosen the best response.1
Do you have specific actual equations for this problem, or is it just a general question about how you would determine the number of solutions?
 one year ago

JakeV8Best ResponseYou've already chosen the best response.1
If you try to solve a system of linear equations and you get a solution like x = 2, y = 4 or something, then it has a single unique solution... this is the intersection point between the two lines that are the original equations. If you try to solve and you can't solve and you get something like 5 = 5 or x = x, then it means the two line equations are actually just the same line, and it has infinitely many solutions. If you try to solve and get nonsense like 2 = 4, then it means the lines are parallel and there are zero solutions.
 one year ago

AngelDreamGurlBest ResponseYou've already chosen the best response.0
dw:1354146202520:dw THIS IS THE EQUATION
 one year ago

JakeV8Best ResponseYou've already chosen the best response.1
Do you see how the bottom equation is just twice the top equation? Every number is just multiplied by 2. That means it really is the same line... so the "solution" is every point on the line, or in other words, there are infinite solutions.
 one year ago

AngelDreamGurlBest ResponseYou've already chosen the best response.0
Ok I got you! thanks!
 one year ago

JakeV8Best ResponseYou've already chosen the best response.1
glad to help :) An example of a parallel system would look like: 2x + y = 5 2x + y = 10 If you tried to solve, you wouldn't get a nice answer :) It might look like 5 = 10. The problem is that the slopes are the same, but the intercepts are different, and the lines are parallel, meaning they don't cross, so zero solutions.
 one year ago

AngelDreamGurlBest ResponseYou've already chosen the best response.0
Oh...OK that helps alot.
 one year ago
See more questions >>>
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.