Final answer:
The reflection across the x-axis of the function f(x) = |x| is found by changing the sign of the y-values resulting in g(x) = -|x|. This can be simplified as g(x) = -1 * |x - 0| + 0.
Step-by-step explanation:
The reflection across the x-axis of the function f(x) = |x| can be found by changing the sign of the y-values. So, to find g(x), we can rewrite the absolute value function as g(x) = -|x|.
This can be further simplified as g(x) = -1 * |x|, where a = -1, h = 0, and k = 0. Therefore, the reflection of f(x) = |x| across the x-axis can be written as g(x) = -1 * |x - 0| + 0.