Answer
The slope of the line is 7 and the y-intercept is (0,0).
Work Step by Step
The equation $f(x)=7x$ 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.
$m=7$ and $b=0$
Therefore, the slope of the line is 7 and the y-intercept is (0,0).