Question

What is the graph of (-8, 2]?

Answer 1

Start at the origin (0, 0), the point where the x-and y-axes intersect.
Go left 8 units. (You go left because the first number is negative.)
Then go up 2 units (Up because 2 is positive.)
Where you end up is the point (-8, 2).

Answer 2

It seems like they are asking you to "graph" a half open interval? I'm puzzled by the question.

Answer 3

Sorry. I thought it was a point. I didn't notice the square bracket on the right side.
Yes, this is an interval.
Start with a number line.
Place a closed dot at 2, and an open dot at -8.
Then darken the line between those two points.