SOLUTION: I just started algebra 1 this year so Im a bit confused on the homework and I needed help... How do you set up a Domain and a Range? Or, In other words... What numbers do you use

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Question 337453: I just started algebra 1 this year so Im a bit confused on the homework and I needed help...
How do you set up a Domain and a Range? Or, In other words... What numbers do you use and where do they go? Thank you if you can answer my question...
Kim D.
Found 2 solutions by stanbon, Edwin McCravy:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I just started algebra 1 this year so Im a bit confused on the homework and I needed help...
How do you set up a Domain and a Range?
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Let the Domain be {1,2,3}
Let the Rule be y = 2x
Then the Range is {2,4,6}
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The Domain was set up arbitrarily.
The Rule is whatever you make it.
But the Domain and Rule together
determine the Range.
----
The Domain values are said to be "independent"
because they are arbitrary.
The Range values are said to be "dependent";
they depend on the Domain values and the Rule.
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Cheers,
Stan H.

Answer by Edwin McCravy(20065) About Me  (Show Source):
You can put this solution on YOUR website!

The domain is the set of all the numbers that you could possibly substitute
for x in an equation to get a value for y.

The range is the set of all the numbers you could possibly get for y when you
substitute those numbers in the domain into the equation for x and simplify.

Edwin