Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
slope =
1.
â
2.
B
3.
’ë
4.
“Š
ƒŒƒxƒ‹3.
•ÏX
SDAL“‡‰pŒêŠwZ