Chapter 2, Functions - Section 2.6 - Transformations of Functions - 2.6 Exercises - Page 242: 3

(a) $x$-axis (b) $y$-axis

(a) The graph of $y=-f(x)$ is obtained from the graph of $y=f(x)$ by reflecting in the ___$x$-axis___. (b) The graph of $y=f(-x)$ is obtained from the graph of $y=f(x)$ by reflecting in the ___$y$-axis___.