8.若函數(shù)的圖象經(jīng)過(1.7)點(diǎn).又其反函數(shù)的圖象經(jīng)過(4.0) 點(diǎn).則的解析式是 ( ) A. B. C. D. 查看更多

 

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若函數(shù)f(x)=ax+n的圖象經(jīng)過(1,7)點(diǎn),又其反函數(shù)f-1(x)的圖象經(jīng)過(4,0)點(diǎn),則f(x)的解析式是


  1. A.
    4x+3
  2. B.
    2x+5
  3. C.
    5x+2
  4. D.
    3x+4

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若函數(shù)f(x)=ax+k的圖象經(jīng)過(1,7)點(diǎn),又其反函數(shù)f-1(x)的圖象經(jīng)過點(diǎn)(4,0),則函數(shù)f(x)的表達(dá)式為________.

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若函數(shù)f(x)=ax+n的圖象經(jīng)過(1,7)點(diǎn),又其反函數(shù)f-1(x)的圖象經(jīng)過(4,0)點(diǎn),則f(x)的解析式是

[  ]

A.4x+3

B.2x+5

C.5x+2

D.3x+4

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