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NenitaWolffe NenitaWolffe
  • 10-09-2015
  • Mathematics
Answered

What is the value of k in the function ƒ(x) = 112 - kx if ƒ(-3) = 121?

Verified Answer :

Panoyin
Panoyin Panoyin
  • 10-09-2015

f(x) = 112 - kx
 f(-3) = 112 - k(-3)
 f(-3) = 112 - (-3k)
 f(-3) = 112 + 3k
  121 = 112 + 3k
- 112  - 112
      9 = 3k
      3     3
      3 = k

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