georgettabrown georgettabrown
  • 26-01-2020
  • Mathematics
contestada

F(x)=-1/4x-3, find the value of x for which f(x)=x

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sqdancefan
sqdancefan sqdancefan
  • 26-01-2020

Answer:

  x = -2.4

Step-by-step explanation:

  f(x) = -1/4x -3

  x = -1/4x -3 . . . . .  the desired value of f(x)

  5/4x = -3 . . . . . . . add 1/4x

  x = -12/5 . . . . . . . multiply by 4/5, the inverse of 5/4

__

Check

  -1/4(-2.4) -3 = 0.6 -3 = -2.4 = x . . . . answer checks OK

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