We have to compare the graph of y>2 to y=2.
y=2 is a line, while y>2 is a region limited by the line y=2 (it can be called half-plane).
Also, the line y=2 is not included in the region y>2, as it is not a closed interval (it does not include y=2).
Any point with y>2 will be a solution to the inequality.
