"Input value" just means the value of x. "Output value" means value of y. So, what is x when y = 6.2? Well, we can substitue using the provided information. 6.2 = x / 10. Now we can solve for x (Input value.) 6.2 * 10 = x 6.2 * 10 = 62 so, x or the input value = 62.