How to have linear regression data appear on figure as text?

Hello,

I'd like to have some linear regression data appear on a figure.

Currently, the code appear as:

 for x = B(1:19,5)
    for y = B(1:19,12);
    figure(1);
    subplot(3,1,1);
    scatter(x,y); grid on;
    hold on

    lsline
    mdl = fitlm(x,y);

    str1 = 'r^2 = 0.800';  %This is found by looking at the output in the command window and manually entering the value back in 
    text(20,250,str1);     %Manually entered text location, but would be happy with it appearing elsewhere
    end
  end

I would like both the r^2 value and the equation of the line to appear on the figure.

Any guidance or suggestions are greatly appreciated.

Cheers