SOLUTION: Write an equation of the inverse relation. f(x) = 109 - 5x / 5 + 3x

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Question 438271: Write an equation of the inverse relation.
f(x) = 109 - 5x / 5 + 3x
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Write an equation of the inverse relation.
f(x) = 109 - 5x / 5 + 3x
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1st: Interchange x and y:
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x = (109-5y)/(5+3y)
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2nd: Solve for "y":
5x+3xy = 109-5y
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3xy+5y = 109-5x
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y(3x+5) = 109-5x
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y = (109-5x)/(3x+5)
That is the inverse relation.
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Cheers,
Stan H.
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