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anonymous
 4 years ago
If f(x)=3x8 then
a) f^1(y)=?
b)f^1(6)=?
anonymous
 4 years ago
If f(x)=3x8 then a) f^1(y)=? b)f^1(6)=?

This Question is Closed

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1y=3x8 Interchange the x and y x=3y8 Now solve for y x+8=3y y=1/3x+8/3

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Now plug in 6 for y=2+8/3 y=14/3

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Mertsj how can i get x by itself?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1What equation are you referring to?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Multiply both sides by 3 first of all.

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1That gives you: 3y=x+8 Now subtract 8 from both sides and you will have x by itself.
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