K.Black

① oh D2 -1 EZ - 4F = 0

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DZ② n? '

-1 E -41=>0

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D-③ oh ' <0

+ E - 4F

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h k

Sol

(b- anoint 1×-412+4 - F) " '

• - r

N

66MW : ( ✗ + 3)4- ( y -1512=52

r = 5 maize

Sol ① 7-( ✗ - h ) Ky( - -'

) =p

( ✗ + 4) 7- ( y -1372=42

→ 1 1 11

① ② ② ( hx - ) 't ( y - K ) ? v2

• 14 3)
,

*• 1-4 - 3) co -3 ) 2 ( y -135=42
, ,
( ✗ - 4) -1

?⃝

☒ . ( 0 1) 2. ( 0,2 ) 3. ( 1,0 ) 4. ( 3,0 )
,
e
Sol

e) Mp = K- l
n- 2
t
= - k -11
r

•

12,1 )

MzMr ✗ l= - r= ( 1- 2) ' + ( k 2

- 1)

f - k + 1) ( 1 ) = -1 = 1+1,13 # 2

3 =2

K = 3+1

• 2=4" #
••
( x - 2) + ( y - 1)

① 4+0
② 4+1
③ 1+1
④ its

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