QuestionAugust 26, 2025

What is the inverse of f(x)=(1)/(3)x+5 f^-1(x)=3x-15 f^-1(x)=-(1)/(3)x+(5)/(3) f^-1(x)=3x+15 f^-1(x)=-(1)/(3)x-5

What is the inverse of f(x)=(1)/(3)x+5 f^-1(x)=3x-15 f^-1(x)=-(1)/(3)x+(5)/(3) f^-1(x)=3x+15 f^-1(x)=-(1)/(3)x-5
What is the inverse of f(x)=(1)/(3)x+5
f^-1(x)=3x-15
f^-1(x)=-(1)/(3)x+(5)/(3)
f^-1(x)=3x+15
f^-1(x)=-(1)/(3)x-5

Solution
4.5(190 votes)

Answer

f^{-1}(x)=3x-15 Explanation 1. Swap x and y Start with y = \frac{1}{3}x + 5. Swap x and y: x = \frac{1}{3}y + 5. 2. Solve for y Subtract 5 from both sides: x - 5 = \frac{1}{3}y. Multiply by 3: 3(x - 5) = y. 3. Simplify Simplify to get y = 3x - 15.

Explanation

1. Swap $x$ and $y$<br /> Start with $y = \frac{1}{3}x + 5$. Swap $x$ and $y$: $x = \frac{1}{3}y + 5$.<br />2. Solve for $y$<br /> Subtract 5 from both sides: $x - 5 = \frac{1}{3}y$. Multiply by 3: $3(x - 5) = y$.<br />3. Simplify<br /> Simplify to get $y = 3x - 15$.
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