Answer
The graphs of the two equations are parallel lines.
Work Step by Step
RECALL:
(1) In the slope-intercept form of a line's equation, $y=mx+b$, $m$=slope and $b$ is the y-coordinate of the y-intercept.
(2) Parallel lines have equal or the same slope.
Write both equations in slope-intercept form to obtain:
First Equation:
$y+9=3x
\\y+9-9=3x-9
\\y=3x-9$
Second Equation:
$3x-y=-2
\\3x-y+y+2=-2+y+2
\\3x+2=y
\\y=3x+2$
Note that both equations have the same slope $m=3$ .
Since they have the same slope, then their graphs are parallel lines.