Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. —l
2. “¤
3. Õ
4. â

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ