A certain function is defined as f(x) = a/x2 , where a and x are both positive numbers. Which of the following graphs best depicts this function?


f(x) varies inversely with x. In other words, as the value of x increases, the value of y decreases. Since x is squared, the relationship is exponential, and the graph must be curved (not a straight line). Only choice (2) provides a graph that fits this functional relationship.

Visit our website for other GED topics now!