As shown in the figure, it is a part of the image of an inverse scale function, and points a (1,10) and B (10,1) are its endpoints. (1) find the analytic expression of the function, and write out the value range of the independent variable x; (2) please give an example of life that can be described by the functional relationship of this problem

As shown in the figure, it is a part of the image of an inverse scale function, and points a (1,10) and B (10,1) are its endpoints. (1) find the analytic expression of the function, and write out the value range of the independent variable x; (2) please give an example of life that can be described by the functional relationship of this problem

(1) Let y = KX, ∵ a (1,10) in the image, ∵ 10 = K1, that is, k = 1 × 10 = 10, ∵ y = 10x, where 1 ≤ x ≤ 10; (2) the answer is not unique. For example, if Xiaoming's home is 10km away from school and goes to school at the speed of vkm / h every day, then the time required for Xiaoming to go to school from home is t = 10V