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Mathematics 7 Online
OpenStudy (anonymous):

If f(x) = 4x - 3, what is f(x)^-1? A.x/4+3 B.(x+3)/4 C.4/(x+3) D.3-4x

OpenStudy (anonymous):

do you mean what is f(-1)?

OpenStudy (anonymous):

it f(x)^-1

OpenStudy (anonymous):

oh the inverse change it to: x = 4y-3 solve for y

OpenStudy (anonymous):

the answer is one of your choices

OpenStudy (anonymous):

you basically swap the x and y and solve for y which is the output of f(x)

OpenStudy (anonymous):

B?

OpenStudy (anonymous):

:)

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