While the domain is how far left-to-right the graph goes (it’s about the x-values),
the range is about how low to how high the graph gets. The range is about the y-values used in the graph.
Your graph bottoms out at -6 and tops out at 4, but never gets to 4, because of that open circle.
So the range is -6 ≤ y < 4. Note that we use y for the range.
Interval: [-6,4)
Set-builder: { y | -6 ≤ y ≤ 4 }
Again, be sure to use y in the set-builder.
