Question 1202317
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Answers:
Domain = set of all real numbers
Range = set of all real numbers


Graph:
{{{
graph(400,400,-4,4,-4,4,-100,3x+2)
}}}
The graph stretches forever to the left and right. This is a visual confirmation the domain is the set of any real number. We can replace x with any number to get some output y = f(x).


The graph stretches forever up and down, which gives visual confirmation of the range being the set of all real numbers. 


If your teacher wants interval notation, then,
Domain is (−∞, ∞)
Range is (−∞, ∞)
Both result in the same interval notation.


If instead inequalities are required, then,
Domain:  −∞ < x < ∞
Range:  −∞ < y < ∞
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