How do you find the domain and range of a function? What is the difference between them?

Question

anonymous · Answer

domain is x, range is y

anonymous · Answer

well, all values of x that make the function defined and the ys that said xs gives you

anonymous · Answer

domain is all the x values where the function is defined. range is the y values for all the x's.

anonymous · Answer

normally the domain is all real numbers, unless you have a fraction in your formula, and then it is undefined when the denominator is zero, because division by zero is undefined.

anonymous · Answer

domain is the set of all values for which the function is defined and range the collection of all values obtained from the function by plugging in the values of domain

anonymous · Answer

So, if the number is (-3,1), -3 would be the domain and 1 would be the range?

anonymous · Answer

ummm... sorta...

anonymous · Answer

no -3 is a number in the domain and  1 is a member of range

anonymous · Answer

but domain and range usually apply to a function not a point. but kinda...

anonymous · Answer

oh, okay. Thank you.