Suppose that y is directly proportional to x . 1) Find the constant of proportionality, k, ify = 67.2 when a = 14. Write your answer as a decimal. K = 2) Using the k from above write the variation equation in terms of a y 2) Using the k from above find y given that a = 33 . Write your answer as a decimal. y ; If needed, round to the nearest tenth