問題詳情
試求過坐標平面上一點( 2，-1 )且與直線x/3+y/4=1垂直的直線方程式為何？
(A)4x+3y+9=0
(B)3x+4y+10=0
(C)4x-3y-9=0
(D)3x-4y-10=0。
(A)4x+3y+9=0
(B)3x+4y+10=0
(C)4x-3y-9=0
(D)3x-4y-10=0。
參考答案
答案：D[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(5),E(0)
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