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Nikitich [7]
3 years ago
7

Select the equation that is the inverse of the given function f(x)=x-3/5

Mathematics
2 answers:
vampirchik [111]3 years ago
7 0

f(x)=\dfrac{x-3}{5}\to y=\dfrac{x-3}{5}\\\\\text{Interchange the y and the x}\\\\x=\dfrac{y-3}{5}\\\\\text{Solve for y}\\\\\dfrac{y-3}{5}=x\qquad|\cdot5\\\\y-3=5x\qquad|+3\\\\y=5x+3\\\\Answer:\ B.\ f^{-1}(x)=5x+3

puteri [66]3 years ago
4 0

Answer:

(B) f^{-1}(x)=5x+3

Step-by-step explanation:

Given: The function f(x)=\frac{x-3}{5}.

To find: The inverse of the given function f(x)=\frac{x-3}{5}.

Solution: Let us consider the function f(x)=\frac{x-3}{5}, Let f(x)=y, then the function becomes

y=\frac{x-3}{5}

Now, interchanging the variables as interchange y with x and x with y, we get

x=\frac{y-3}{5}

Now, solving for y, we have

y=5x+3

Thus, the inverse can be written as:

f^{-1}(x)=5x+3

Hence, option (B) is correct.

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