To find the y-intercept of a graph, we look for the point where the graph crosses the y-axis. This happens when the x-coordinate is 0.
From the points you've given, we can see that (0, 9) is included. This point indicates that when \( x = 0 \), \( y = 9 \).
Therefore, the y-intercept for the graph is \( y = 9 \).