MATLAB: How to plot a data points

plotting

hello there, i have 15 (x) points named x1 to x15; and corresponding to this i have 15 (y) points named from y1 to y15. how can i plot them ?

x = [x1, x2, x3, x4, x5, x6, x7, x8, x9]

And do the same kind of thing for y1 etc. Then

plot(x, y)

Perhaps I'm misunderstanding but if

 x = [1.0000         0
      0.5000    1.0000
      0.5000    1.5000
           0   -1.0000
     -1.0000    1.0000
      0.5000   -1.0000];

which is a 6x2 array, then wouldn't

 x*x'

be the desired 6x6 array?

The first mistake was creating variable names like this: x, x2, x3. Such variable names make it extremely difficult to write compact code and are discouraged: https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval. It is better to create a cell array, and then you could easily use for-loop. For example, now you can do something like this

X = {x, x2, x3, x4, x5, x6, x7, x8, x9, x10};
Y = {y, y2, y3, y4, y5, y6, y7, y8, y9, y10};
for i = 1:numel(X)
    figure(i)
    plot(X{i}, Y{i})
end