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How do I find what domain and range is in an equation/graph.

Sagot :

Domain is all the x values which return a y value.
Range is all the y values that can be returned from any given x.
For example, y=x^2 has a domain of all real numbers because any number can be squared and get another number, however it has a range of y>=0 because no matter what x no value under 0 can be returned.