Find y values from x value.

If x is my x values how can I find corresponding y values, I am very much confused. Anybody, please help me.

clc;
clear;
clear obj;
data=xlsread('Glassxl.xlsx');
asc=sort(data);
 minpts=6;
 epsilon=4;
[idx, corepts] = dbscan(asc,epsilon,minpts);
 gscatter(asc(:,1),asc(:,2),idx);
 x=data(corepts);

[KSSV]

Which column of data is x and y?

[sreelekshmi ms]

I only have this dataset. If I partition the data as X and Y. Then how can I find it?

If I partition the data is there any change occur in that x points?

From the above plot(dbscan figure) is there is any way to find that x and y values(from that corepts)? Please help me.

X=data(1:107);
Y=data(108:end);