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Find the inverse function in slope-intercept form 
(mx+b) :

f(x)=-5x+20
Answer: 
f^(-1)(x)=

Find the inverse function in slope-intercept form (mx+b) (\mathrm{mx}+\mathrm{b}) :\newlinef(x)=5x+20 f(x)=-5 x+20 \newlineAnswer: f1(x)= f^{-1}(x)=

Full solution

Q. Find the inverse function in slope-intercept form (mx+b) (\mathrm{mx}+\mathrm{b}) :\newlinef(x)=5x+20 f(x)=-5 x+20 \newlineAnswer: f1(x)= f^{-1}(x)=
  1. Understand Inverse Function: Understand the concept of an inverse function. An inverse function reverses the operation of the original function. If f(x)=yf(x) = y, then f1(y)=xf^{-1}(y) = x. To find the inverse function, we need to solve for xx in terms of yy.
  2. Replace with yy: Replace f(x)f(x) with yy to prepare for finding the inverse.\newliney=5x+20y = -5x + 20
  3. Swap x and y: Swap xx and yy to find the inverse function.\newlinex=5y+20x = -5y + 20
  4. Solve for y: Solve for y in terms of x.\newlineAdd 5y5y to both sides and subtract xx from both sides to isolate yy.\newline5y=20x5y = 20 - x
  5. Divide to solve: Divide both sides by 55 to solve for yy.y=20x5y = \frac{20 - x}{5}
  6. Simplify the equation: Simplify the equation.\newliney=415xy = 4 - \frac{1}{5}x\newlineThis is the inverse function in slope-intercept form.
  7. Replace with f1(x)f^{-1}(x): Replace yy with f1(x)f^{-1}(x) to denote the inverse function.\newline$f^{\(-1\)}(x) = \(4\) - \left(\frac{\(1\)}{\(5\)}\right)x

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