Start at -10. Note that to get to -16, we need to move 2 spaces. This is a distance of 6 units.
2 spaces = 6 units
1 space = 3 units (divide both sides by 2)
Each tickmark represents 3 units.
Go another 2 spaces over and we go 2*3 = 6 units to the left getting to -16-6 = -22