SOLUTION: Find a mathematical model representing the statement. (Determine the constant of proportionality.) y is inversely proportional to x. (y = 4 when x = 2.)

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Question 968479: Find a mathematical model representing the statement. (Determine the constant of proportionality.)
y is inversely proportional to x. (y = 4 when x = 2.)

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
y = k / x where k is the constant of proportionality
when y = 4, x = 2 then
4 = k / 2
multiply both sides of = by 2
k = 8