For loops with subplots and a function with changing constants

How would I go about using for loops to create subplots of a function while also changing the value of a constant for each subplot?

I'm going to simplify my equations in the example.

Say I want to create 3 subplots of the function y=a*x. The values of a are 2, 4, and 6. In subplot 1 I want to plot y=2x, in subplot 2 I want to plot y=4x, and in subplot 3 I want to plot y=6x. The values of x are 1:10.

I tried the following:

x = [0:1:10];
for i=1:3
    subplot(1,3,i)
    for a=[2 4 6];
        y=a*x;
        plot(x,y)
    end  
end

But that just gave me 3 identical plots for y=6x.

Answer 1

[KSSV]

x = [0:1:10];
a = [2 4 6] ;
for i=1:3
    subplot(1,3,i)
    y=a(i)*x ;
    plot(x,y)
end

[astein]

Thank you! I had a Homer moment ("d'oh!").

Answer 2

[Patrick Hölken]

Hey!

I have a pretty similar problem. I want to add a second function in the loop, like y=a(i)*x.^2. Is it possible to create a figure which includes all the 6 plots (subplot(2,3,i))?

I tried this:

x = [0:1:10];
a = [2 4 6] ;
for i=1:3
    subplot(2,3,i)
    y=a(i)*x ;
    hold on
    subplot(2,3,i)
    d=a(i)*x.^2;
    plot(x,y)
    plot(x,d)
end

But this gives me only 3 plots with 2 functions in each plot.