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What's a Solution Set?
Definition: Solution Set
Summary
- If you plug any of the ordered pairs in a solution set into the equation, you should get a true statement
- Plug each ordered pair into the equation to see if it makes a true statement
- -2=2(0)-2=-2 is a true statement
- 4=2(3)-2=4 is a true statement
- -8=2(-3)-2=-8 is a true statement
- 2=2(2)-2=2 is a true statement
- Since all the ordered pairs make true statements when plugged in, they are the elements of the solution set

Notes
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- If you take an ordered pair from the solution set and plug it into the equation, it should make a true statement
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- y=2x-2 is the equation for our solution set
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- We need ordered pairs because we have two variables, so we need values for both x and y
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- Plug (0,-2) into the equation to get -2=2(0)-2
- Simplifying gives us -2=-2, which is a true statement
- Plug (3,4) into the equation to get 4=2(3)-2
- Simplifying gives us 4=4, which is a true statement
- Plug (-3,-8) into the equation to get -8=2(-3)-2
- Simplifying gives us -8=-8, which is a true statement
- Plug (2,2) into the equation to get 2=2(2)-2
- Simplifying gives us 2=2, which is a true statement
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- This means that these ordered pairs are solutions to our equation
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- So the set of all the possible solutions is the SOLUTION SET