The point marked in the image is over the y-axis
When a point is over the x-axis, the y-coordinate of said point is zero (x,0)
When a point is over the y-axis, the x-coordinate of said point is zero (0,y)
We can conclude that the x-coordinate of the point is zero.
To determine the y-coordinate you have to determine the position of the given point. Assuming each grid indicates one unit. The point is in y=1
So the coordinates for the point are (0, 1)