MaverickLandowski MaverickLandowski

17-11-2016
Mathematics

contestada

which of the following is the inverse of f(x)=4x-10?

A.) f(x)=x-10/4

B.) f(x)=x+10/4

C.) f(x)=4/x-10

D.) f(x)=4/x+10

Respuesta :

MrsTuthill MrsTuthill

17-11-2016

Injective- (one-to-One)
so
Replace the f(x) with y
10-4x
Interchange the variables
x=10-4y
Solv for y.
y= 5/2 - x/4
So solve for y and replace with f-1 (x).
and it equals
f-1 (x)=5/2- x/4

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