I’m trying to figure out this compare functions to pass summerschool I just can’t get it

Answer:
B. The y-intercept of item I is less than the y-intercept of item II.
Explanation:
The y-intercept of a function is the value of y when x = 0.
In item I, from the pair (0,3), the y-intercept of item I = 3.
In Item II:
[tex]\begin{gathered} y=5x+9 \\ \text{ When x=0} \\ y=9 \end{gathered}[/tex]The y-intercept of item II is 9.
Thus, the y-intercept of item I is less than the y-intercept of item II.
Option B is correct.