homevolend said:y =
2 [x-y=1]
-1 [2x+y=-4]
2x-2y=2
-2x-y=4
--------
-3y=6
y=-2
1[x-y=1]
1[2x+y=-4]
x-y=1
2x+y=-4
--------
-x=-3
x=3 I think I did x wrong somehow but don't know what, but I think I did y right.
like that??
homevolend said:x-y=1
2x+y= -4
Solving for x and y in an equation involves using algebraic manipulation and solving for each variable separately. You can use techniques such as substitution, elimination, or graphing to find the solution.
Finding the solution (x,y) in a scientific experiment is important because it helps us understand the relationship between variables and how they affect each other. It allows us to make predictions and draw conclusions about the behavior of a system.
Yes, you can use a calculator to find the solution (x,y) of an equation. There are many online calculators or graphing calculators that can help you solve equations easily.
You can check if your solution (x,y) is correct by substituting the values of x and y into the original equation and seeing if it satisfies the equation. If it does, then your solution is correct.
There are some common techniques and strategies for solving equations, such as factoring, completing the square, and using the quadratic formula. These can help simplify the process of finding the solution (x,y) in certain types of equations.