lydy4771 lydy4771
  • 23-05-2018
  • Mathematics
contestada

Given the function f(x)=3+1/8x find a formula for the inverse function

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MrGumby
MrGumby MrGumby
  • 24-05-2018
f-1(x) = 8x - 24

You can get this by switching the x and f(x) and then solving for f(x) 

f(x) = 3 + 1/8x ---> now switch them
x = 3 + 1/8f(x) ---> now subtract 3 from both sides
x - 3 = 1/8f(x) ---> now multiply both sides by 8
8x - 24 = f(x) ----> ANSWER
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