luis837 luis837
  • 15-11-2018
  • Mathematics
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Inverse of f(x)=-5x+15

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davidhatejason
davidhatejason davidhatejason
  • 15-11-2018

f(x) = -5x - 15


Let y = f(x)


y = -5x - 15


Switch the x and y places, and solve for y:


x = -5y - 15


-5y = x + 15


y = (x + 15)/-5


y = -(x/5) - 3


So the inverse of : f(x) = -5x - 15 is


-x/5 - 3

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