Answer
The slope of the line is 3 and the y-intercept is (0,9).
Work Step by Step
The equation $y=3x+9$ is written in the slope-intercept form
y=mx+b, where m is the slope of the line and the point (0,b) is the y-intercept.
$m=3$ and $b=9$
Therefore, the slope of the line is 3 and the y-intercept is (0,9).