Question

٩۹(๑•̀ω•́ ๑)۶

請問這樣訂正是對的嗎

L 1:2)
國直線MC3 +2y+1=0垂直
與直線L:4-6-5=0平行
(E)與直線L-3x+2y +2=0垂直
NM = (312), I = (-2,3).
N. (-4,-6) I., = (6,-4)
Ñ (3. 2) L.(2,3)
-
Le
L₂
2.
144 (1.3).
A(-2,5) 8(12,47),則線段AB上的格子點有幾個?
(A)12 (B)13 ©14 (DJ15 (E)16
X.YEZ.
c
ī
AB=(14,42)
=14(1:3).
14 24
JK
154.
求兩直線: +3y+3=0, L. x-3y=17-0的夾角為
3.
les or 1200
Ñ = (1:3)
1-3