MATLAB: Can’t I plot such an easy graph

cell arrayplot

Dear community,

Why can't I plot such an easy graph?

for i = 1:100
   x(1,:) = 1 + 2*i;
   y(1,:) = 3 + i;
end
plot(x,y)

I have two arrays, how can I plot this?

Thanks in advance

Use

v = 1:100;
x(1,:) = 1+2.*v;
y(1,:) = 3+v;
plot(x,y)

Why loop when you don't have to?

 val = 7e-5:1e-5:3e-4;
 for i=1:length(val), x(i) = 1 + 2*val(i); y(i) = 3 + val(i);end
 plot(x,y)

    k = 1:5;
    x = 1:100;
    y = k'*log(x);
    plot(x,y);