The tallest escalator on the london underground system is at angel station. it rises to a height of 90 feet over a horizontal distance of 200 feet. let e(x) be the height of one of the escalator's steps as a function of the horizontal distance from the bottom step. the following table shows the coordinates of a linear function. x ƒ(x) -5 -1 1/9 -4 -8/9 0 0 2 4/9 3 2/3 find and compare the rate of change of e(x) and ƒ(x). which function has the greater rate of change and by how much?