Answer:
a)

Explanation:
The y intercept of g(x) is the value of g when x = 0.
In this problem

The y-intercept is

a)

The y-intercept is:

This is the correct answer
b)

The y-intercept is

This is an asymptote
c)

The y-intercept is

d)

The y-intercept is
[tex]f(0) = |0-4| = |-4| = 4.