Which dilation is shown by this graph? In the xy graph, the range of x and y axis is minus four to four by increment of one. On the graph, there are two triangles XYZ and X'Y'Z'. The points are X(1, 2), Y(2, -1), Z(-2, -1), X'(2, 4), Y'(4, -2), and Z'(-4, -2).