Question 414293
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Hi
y varies inversely as x  OR  y = k/x
 y=5 when x=3    5 = k/3  k = 15
  y = 15/x
Finding the value of x when y = 7
  7 = 15/x
  x = 15/7 

CHECKING our Answer***
 {{{7 = 15/(15/7)}}}