CPM Homework Help : INT3 Problem 6-68

A function $W(x)$ is sketched at right.

Make your own copy of the graph, and then sketch the graph of the inverse of $W(x)$ .
Hint (a):
Reflect the graph over the line $y=x$ .
Is the inverse a function? Explain.
Hint (b):
For every $x$ -value, is there only one corresponding $y$ -value?

Piecewise graph, labeled w, of x, with 2 pieces, left is a curve, opening downward, from (negative 1, comma 0) to (0, comma 1). Right is a decreasing line, from (0, comma 1), passing through (1, comma 0), and continuing down & right.