Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1. â
2. ‘æ
3. ‘ã
4. Œ¤

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ