Domain and range. How would I write the domain and range for this graph. The part that confuses me is the open and closed circles mixed together.

Answer: Domain x = [1, 2) ∪ (2, 4) ∪ (4, 6]
Range y = [1, 3) ∪ (3, 5) ∪ (5, 6]
Step-by-step explanation:
OPEN DOT means the number is NOT included
CLOSED DOT means the number IS included
Domain is all of the x-values (numbers at the bottom of the graph).
x is from 1 to 6 but does not include 2 or 4.
Interval Notation: [1, 2) ∪ (2, 4) ∪ (4, 6]
Range is all of the y-values (numbers on the left side of the graph).
y is from 1 to 6 but does not include 3 or 5.
Interval notation: [1, 3) ∪ (3, 5) ∪ (5, 6]