Because we have an open circle at (1, 2), and then the line continues up, we conclude that the domain is:
D: x > 1.
<h3>What is the domain for the piece of the function represented by f(x) = x + 1?</h3>
Here we know that:
"The second line has an open circle at (1, 2)"
This means that the value x = 1 is not on the domain of the second line, and we know that the line "then continues up through (3, 4)"
(notice that these are two points on the line y = x + 1).
So we conclude that x = 1 is the lower bound of the domain of that line (and we can't tell that there is an upper bound).
Then we can just write the domain as:
D: x > 1.
So the last option is the correct one.
If you want to learn more about domains:
brainly.com/question/1770447
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