Question

The inverse of a function is a function.

A. Never
B. Sometimes
C. Always

Answer 1

B. Sometimes

Answer 2

never..

Answer 3

@ninaesb @adilalvi Can you please, give the logic or the proof??

Answer 4

or at least an example to prove it is never a function, or sometimes, not a function.

Answer 5

Now suppose your function is { (1, 2), (2, 1), (3, 4), (5, 1) }. The inverse of this function is { (2, 1), (1, 2), (4, 3), (1, 5) }. This inverse has two points, (1, 2) and (1, 5), that share a common x-value but have different y-values. This means that the inverse is NOT a function.