Question

There are exactly two distinct linear functions ......... and .......... which map [–1, 1] onto [0, 2].

Answer 1

Let f(x) = ax + b, where f:[– 1, 1] → [0, 2]

Clearly, f(–1) = 0, f(1) = 2

or f(–1) = 2, f(1) = 0