95桃園國小第45題
發表於 : 2009年 7月 5日, 17:32
下列哪一直線與平面2x ＋3y＋z–5=0 平行？ ①
x-3
1
=
y-1
1
=
z
1
②
x-3
2
=
y+4
-2
=
z-1
-1
③
x-3
2
=
y-4
-1
=
z+7
1
④
x+5
-1
=
y+3
1
=
z+8
-1
x-3
1
=
y-1
1
=
z
1
②
x-3
2
=
y+4
-2
=
z-1
-1
③
x-3
2
=
y-4
-1
=
z+7
1
④
x+5
-1
=
y+3
1
=
z+8
-1