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

f(x)=2x-8
Answer: 
f^(-1)(x)=

Find the inverse function in slope-intercept form (mx+b) (\mathrm{mx}+\mathrm{b}) :\newlinef(x)=2x8 f(x)=2 x-8 \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)=2x8 f(x)=2 x-8 \newlineAnswer: f1(x)= f^{-1}(x)=
  1. Understand Inverse Function Concept: Understand the concept of an inverse function. An inverse function essentially reverses the operation of the original function. If f(x)f(x) takes an input xx and produces an output yy, then the inverse function f1(x)f^{-1}(x) takes yy as an input and produces the original xx as an output.
  2. Write Original Function: Write the original function.\newlineThe original function is f(x)=2x8f(x) = 2x - 8. To find the inverse, we need to solve for xx in terms of yy.
  3. Swap x and y: Swap x and y.\newlineTo find the inverse function, we switch the roles of x and y. This means we will replace f(x)f(x) with yy and then solve for xx.\newlineSo, we have y=2x8y = 2x - 8.
  4. Solve for x: Solve for x.\newlineNow we need to solve the equation y=2x8y = 2x - 8 for xx.\newlineAdd 88 to both sides of the equation to isolate the term with xx on one side: y+8=2xy + 8 = 2x.
  5. Divide by 22: Divide by ext{ extdollar}22 ext{ extdollar}.\newlineTo solve for ext{ extdollar}x ext{ extdollar}, divide both sides of the equation by ext{ extdollar}22 ext{ extdollar}: ext{ extdollar} rac{y + 88}{22} = x ext{ extdollar}.
  6. Write Inverse Function: Write the inverse function.\newlineNow that we have xx in terms of yy, we can write the inverse function. Replace xx with f1(x)f^{-1}(x) and yy with xx to get the inverse function in terms of xx.\newlinef1(x)=x+82f^{-1}(x) = \frac{x + 8}{2}.
  7. Convert to Slope-Intercept Form: Convert to slope-intercept form.\newlineThe slope-intercept form is y=mx+by = mx + b. Our inverse function is already in this form, with m=12m = \frac{1}{2} and b=82b = \frac{8}{2}.\newlineSo, f1(x)=12×x+4f^{-1}(x) = \frac{1}{2} \times x + 4.

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