firesign1979 firesign1979
  • 09-03-2018
  • Mathematics
contestada

the function f(x) varies inversely with x and f(x) = 0.2 when x = 0.4.


what is f(x) when x = 1.6

Respuesta :

Catya
Catya Catya
  • 09-03-2018
Varies inversely :

f(x) = k/x

There is always a constant of variation , k to solve for using the given information. when x = 0.4 ; f(x) = 0.2

0.2 = k/0.4
0.2(0.4) = k
0.08 = k

final equation : f(x) = 0.08/x

when x = 1.6

f(x) = 0.08/1.6
f(x) = 0.05
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