### Home > A2C > Chapter Ch10 > Lesson 10.2.5 > Problem 10-131

10-131.

*y* = (*x* + 3)^{3} − 1 Switch *x* and *y*.*x* = (*y* + 3)^{3} − 1

(*x* + 1) = (*y* + 3)^{3}

Reverse the *x*- and *y*-coordinates.

Is there only one output (*y*) for each input (*x*)?