Question

Suppose that y is inversely proportional to x.

Find the constant of proportionality k if y = 17 when x = 13.
k =
Incorrect
Using the k from above write the variation equation in terms of x.
y =
Incorrect
Using the k from above find y given that x = 45.
y =

Answer 1

"y is inversely proportional to x" ---- y = k(1/x)
when y = 17, x = 13
17 = 13k
k = 17/13

y = 17/(13x)

so when x = 45
y = 17/(13*45) = 17/585