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Anonymous Anonymous
  • 09-03-2015
  • Mathematics
Answered

If ƒ(x) varies directly with x and ƒ(x) = 32 when x = -8, then what is ƒ(x) when x = 4?

A-12
B-1
C-16
D-8

Verified Answer :

konrad509
konrad509 konrad509
  • 09-03-2015

\(f(x)=kx\\ 32=-8k\\ k=-4\\ f(x)=-4x\\\\ f(4)=-4\cdot4=-16\)

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