If y = f(x) =((x+2))/((x-1)), then (a) x...

If `y` = `f(x)` =`((x+2))/((x-1))`, then (a) `x` = `f(y)` (b) `f(1)` = `3` (c) `y` increases with `x` for `x` < `1` (d) `f` is a rational function of `x`

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