y = (2x - 1)/(x - 1) = 2 + 1/(x - 1)
y = 1/x -> 向右移动1个单位 -> y = 1/(x - 1)
-> 向上移动2个单位 -> y = 2 + 1/(x - 1) 即 y = (2x - 1)/(x - 1)
y = (2x - 1)/(x - 1) = 2 + 1/(x - 1)
y = 1/x -> 向右移动1个单位 -> y = 1/(x - 1)
-> 向上移动2个单位 -> y = 2 + 1/(x - 1) 即 y = (2x - 1)/(x - 1)