The diagram below shows the graph of which inequality?
у
4
3
2
1-3-2-1
1) y > x-1
2) y 2r-1
3) y 4) SX-1

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.