As y varies inversely with x, we have a function of the form: y = k / x We must find the value of k: For this we substitute y = 5 when x = 5. We have then: 5 = k / 5 k = 5 * 5 k = 25 Then, the function is: y = 25 / x Answer: the inverse variation function is: y = 25 / x
