Find the Slope and the Y-Intercept of the Line $x+3 y=-3$

Multiple Choice

Find the slope and the y-intercept of the line.
- $x+3 y=-3$

A) $\mathrm{m}=-\frac{1}{3} ; \mathrm{b}=-1$
B) $m=-3 ; b=0$
C) $\mathrm{m}=\frac{1}{3} ; \mathrm{b}=-9$
D) $m=3 ; b=-9$