Khan Academy

Supporting grades: 8

Description: The solution of an equation with one variable is a number. How does the solution of a 2-variable equation look like? Well, it is an ordered pair. Learn more about it and how to test solutions to 2-variable equations. Negative three x minus y is equal to six. So when they tell us the ordered pair, negative four comma four, they're saying "hey look, if x is equal to "negative four, and y is equal to positive four, "does that satisfy this equation?" And what we can do, is we can just try that out.

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