Question

已知y与x-1成反比例,并且x=6时,y=-3.(1)求y与x之间的函数解析式(2)求当x=4时,y的值(3)求当y=5

Answer 1

(1)y=a/(x-1) x=6 y=-3 a=-15 y=-15/(x-1)

(2) y=-15/(x-1) x=4 y=5

(3) y=-15/(x-1) y=5 x=4