Anbressan

Guys, help, I'm using and reading everything here that I can, but I just can't find the book. These are my cordinates: (-319,261) (-279,231) (-239,201) (-199,201) (-159,231) (-119,261) Then the suposts X coordinate is 9 Y coordinate is 18. And I don't find the book Please help me. I already tried to make -30 in the Y repeated numbers (9,9) and didn't work too.