Answer:
at y = 9
Step-by-step explanation:
[tex]y = mx + b[/tex]
where m = slope and b = y-intercept.
The question asks where does the line cross y-axis. That means what is the value of b or what is the y-intercept.
Because it is y-axis, we don't need x-axis/value or term. The value of b is 9, intercept y-axis at (0,9).
Therefore, the answer is third choice.
