The graph shows the path that Karis bicycles on Thursday. Each unit represents 1 mile. She bicycles north, then east, then south
, and finally west to return to the same starting point at (1, 3). On Saturday, Karis starts at (1, 3), but bicycles 4 more miles north and 5 more miles east, along a similar rectangular path. She determines that she rode an additional 4+5=9 miles. Is Karis correct?
