how to form the code with fixed number of values on x axis and variable number of values on y axis.

x=1, y= 2,3;
x=1, y= 2,3,4;
x=1, y= 2,3,4,5;
x=1, y= 2,3,4,5,6;
x=1, y= 2,3,4,5,6,7;
x=1, y= 2,3,4,5,6,7,8;
x=1, y=2,3,4,5,6,7,8,9;

[Walter Roberson]

Duplicates https://www.mathworks.com/matlabcentral/answers/370127-marix-calculation-with-fixed-and-changing-value

Answer 1

[Image Analyst]

How about

x=1, y= [2,3];
x=1, y= [2,3,4];
x=1, y= [2,3,4,5];
x=1, y= [2,3,4,5,6];
x=1, y= [2,3,4,5,6,7];
x=1, y= [2,3,4,5,6,7,8];
x=1, y= [2,3,4,5,6,7,8,9];

or

for k = 1 : 9
    x=1
    y = 2:k
end

or

x = 1;
y = 2 : randi(9, 1, 1)

Or any number of other ways depending on what your intent is.