We have the following:
We must determine the equation of the line on the graph, knowing that the equation in its slope and y-intercept form is the following

we calculate the slope as follows
The points are (4,1) and (-4,-3)

replacing

The y-intercept is (0, -1), therefore b is -1
Therefore, the equation is:

To confirm if the point is there, we must replace the value of (128) in the equation and it must equal 63

Which means that the point (128, 63) is in the line shown in the graph.