Plot figures in loop as superimposed top on top

Similar questions should have been asked however I couldn't get a solution.

Plot can superimpose these loop figures onto one another:

figure();
hold all
for i=1:2:11
    y=i;
    plot(x,y);
end

However, interestingly can't do the same here:

figure();
hold all
for i=1:2:11
    y=x.^i;
    plot(x,y);
end

What it does is plotting only the last figure. Any ideas why is this?

Answer 1

[KSSV]

Used hold on after the plot inside loop.

[JohnDylon]

I tested this as well, it doesn't work.

[KSSV]

figure(); hold on for i=1:2:11 y=i; plot(x,y,'.b'); end

[JohnDylon]

As I mentioned in the original question, it works when you pick y=i, but not for y=x.^i in the loop.

[KSSV]

What is x?

[Image Analyst]

Is x a vector or scalar? What is/are its value(s) exactly? Give code to generate x.