How do I determine the location of a missing point?

Answer 1

To find the location of a missing point, you'll need some information. e.g., what form does the function that maps from x to y take, and where on the graph is the missing point.

You'll need to know the function that can be used to map from x to y or vice versa.

If you have a straight line, the function is

y=mx+b

Then if you know x but not y, you can calculate y via the function above. If you know y but not x, you can calculate x by solving the above formula for x.

You can use the same technique for other functions. If you don't have a function, you can use a number of interpolation techniques to infer the location of the missing point.