Graph the Solution Set $$\left| x ^ { 2 } + 9 \right| = | 6 x |$$

Multiple Choice

Graph the solution set.
- $$\left| x ^ { 2 } + 9 \right| = | 6 x |$$

A) $\{ - 3,3 \}$
B) $\varnothing$
C) $\{ - 3 \}$
D) $\{ 3 \}$