To identify the y-intercept of a line on a coordinate plane, you need to look at where the line crosses the y-axis. The y-intercept is the point where the line intersects the y-axis, which corresponds to the coordinates (0, y).
In this case, since the line is described as sloping downward from quadrant 2 to quadrant 4, it suggests that the y-intercept occurs in quadrant 1 or at the origin (0,0) while the line may continue downward through quadrant 4.
If there is a specific image or coordinate provided, please describe it or share the relevant details, and I can assist you further in identifying the y-intercept. Without the image, I can't give the precise y-coordinate, but generally, it will be the point where the line crosses the y-axis.