Answer
The slope of the line is -1 and the y-intercept is (0,5).
Work Step by Step
The equation $f(x)=-x+5$ 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.
$m=-1$ and $b=5$
Therefore, the slope of the line is -1 and the y-intercept is (0,5).