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monica10
 3 years ago
List the three methods for solving equations and give a brief explanation of each method.
monica10
 3 years ago
List the three methods for solving equations and give a brief explanation of each method.

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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).
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