Asked by Jiwon

What is the Domain and Range of the function
f(x)=2x+1 ?

Please teach meeeee!
Answered by Steve
the domain of all polynomials is (-∞,∞)

There is no value of x which is not allowed.

Since the graph is a sloping straight line, it extends forever in both directions, so the range is also (-∞,∞)
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