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DOMAIN AND RANGE???
Hey, we had our algebra mid-term today & there was this question with an input/output table and it said to describe the domain and range! i do'nt ever remember learning this, does any body know? i get to finish my test tomorrow.
thanks for any help you give
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well, domain refers to X and range refers to Y.
When given the points (2,3) (3,7) and (5,1) the domain is 2, 3, and 5. The range is 3, 7, and 1. It's really simple when you get the hang of it.I hope that was what you were looking for...
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I think the domain is the y and range is x
♥Paige
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Domain refers to valid input of an equation. This seems silly when you're first learning it, as most simple algebraic equations accept all real numbers. But consider 1/(2 - x). Remember that you can not divide by zero. Therefore, the domain is all real numbers except for two.
Just an example of why the term is used.
Range refers to, well, the range of the output of numbers. For example, the y = x^2 will always be positive. Thus, the range is all real numbers greaters than zero.
That's just the basic concepts. Looking at a table of values involves teasing out acceptable values of x (domain) and acceptable values of y (range). At least, for two variables. *snickers*
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