SOLUTION: what is the domain and range of f(x)=x^2-1. and how do i find ranges in general?

Question 687904: what is the domain and range of f(x)=x^2-1. and how do i find ranges in general?
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
how to find domain and range in general:
(, ), (, ), (, ), (, ), (, )}
The above list of points, being a relationship between certain x's and certain y's, is a relation.
The is all the , and the is all the . To give the domain and the range, I just list the values without duplication:
domain: {., ,, .}
range: {., , ,.}

the domain and range of
let' se the graph:

as you can see, can take any real number for and

domain:

or (, )
range:

for
or (, )

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