Question

若把函數(shù)f(x)的圖象作平移變換，使圖象上的點(diǎn)P(1，0)變換成點(diǎn)Q(2，-1)，則函數(shù)y＝f(x)的圖象經(jīng)過(guò)此變換后所得圖象的函數(shù)解析式為

1. A.
   y＝f(x-1)-1
2. B.
   y＝f(x+1)-1
3. C.
   y＝f(x-1)+1
4. D.
   y＝f(x+1)+1

Answer 1

A