Which statement is NOT always true (algebra 2 help)

Question

A) The inverse of a linear function is a function

B) The inverse of a quadratic function is not a function

C) If a function has two x-intercepts, then its inverse has two y-intercepts

D) The inverse of an exponential function is a logarithmic function

Answer 1

(A) is not always true.  For example, y = 2 is a linear function, but the "inverse" is a vertical line, which is not a function.  

Answer 2

A is not always true.

 

The inverse of a constant function is not a function.