Describe How the Graph of the Equation Relates to the Graph

Multiple Choice

Describe how the graph of the equation relates to the graph of y $y = \sqrt [ 3 ] { x }$
- $$f ( x ) = 3 \sqrt [ 3 ] { x }$$

A) a vertical stretching by a factor of 3
B) a reflection across the $x$ -axis
C) a translation 3 units up
D) a reflection across the $y$ -axis