Given that
Compare with the slope-intercept form
where m is the slope of the line and c is the y-intercept.
Here:
Slope of f(x) = 1/4
Slope of g(x) = 1/2
y-intercept of f(x) = -1
y-intercept of g(x) =-2
Since 1/2 > 1/4, that is, slope of g(x) > slope of f(x), g(x) is steeper than f(x).
Now, -2 < -1. So, y-intercept of g(x) is less than the y-intercept of f(x). So, g(x) is steeper and has a lower y-intercept.
Hence the third option is correct.