A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
List the three methods for solving equations and give a brief explanation of each method.
anonymous
 3 years ago
List the three methods for solving equations and give a brief explanation of each method.

This Question is Closed

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1Three methods for solving SYSTEMS of equations?

Hero
 3 years ago
Best ResponseYou've already chosen the best response.11. By Elimination: If you have a system of the form: 3x `+ 2y` = 4 4x ` 2y ` = 10 you notice that 2y and 2y are opposites, then you combine the equations together to eliminate the y variable. When you do that, you get: 7x = 14 Solving for x to get x = 2, which means y = 1 2. By substitution If you have a system of the form: x = `2y + 4` 2x  y = 8 Then you notice that one of the variables is isolated. In this case, x is isolated in the first equation, therefore you substitute the expression for x into the second equation to get: 2( `2y + 4`)  y = 8 Then solve for y: 4y + 8  y = 8 4y  y + 8 = 8 3y = 8  8 3y = 0 y = 0/3 y = 0 So y = 0. Substituting y back in to the original equation yields x = 4 By graphing: If you have a system of the form y = 2x + 4 y = 7x  3 You can solve the system by graphing since both equations are in the form y = mx + b to find the solution point (x,y).
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.