Explanation:
think of graphing inequalities as graphing with an extra step of shading the correct area.
what we first need to do is to graph
and to do this we find two points on the line. when x=0, we have y=-3 and when x=1, we have y=0. so we have two points (0, -3) and (1, 0) and we can sketch the line.
however, the inequality sign > means that y must be greater than 3x-3 and so the line 3x-3 isn't part of the shaded portion. to denote this, we use a broken line to show that 3x-3 is not part of the shaded bit. this also means that every y value has to be greater than the y-value of the line, and so we shade the portion above the line.
the image shows what the graph should look like.