cing cing
  • 24-11-2014
  • Mathematics
contestada

Y varies inversely as x and y=5 when x=3

Respuesta :

paulcox
paulcox paulcox
  • 24-11-2014
xy=k

3*5=k

k=15

xy=15 or y=15/x
Answer Link
apologiabiology
apologiabiology apologiabiology
  • 24-11-2014
so if somthing varies inversely then when one value goes up, the other value goes down so xy=z and z has to be the same so lets say that z=16
when x=2 y=8
when x=4 y=4
when x=8 y=2
when x=16 y=1
so xy=z
subtitute
(3)(5)=15
so if x=5 y=3
x=1 y=15
x=15 y=1
Answer Link

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