Solve the Problem $y = x + 9$ When Reflected in The

Multiple Choice

Solve the problem.
-Find the equation of the image of the line $y = x + 9$ when reflected in the $x$ -axis.

A) $y = - x - 9$
B) $y = x - 9$
C) $\mathrm { y } = - \mathrm { x } + 9$
D) $y = x + 9$