How can I make multiple lines on a graph more spaced apart?

I have to put 4 lines on the same graph but they overlap and are hard to see clearly. Is there anyway to make them more spaced out or stretch the axes so that they can be seen better?

figure
errorbar(K20conc,K20int1,K20errx,K20erry,'rx','MarkerSize',5,'CapSize',12,...
    'Linestyle','none', 'HandleVisibility','off') ;
hold on
K20line = polyfit(K20conc, K20int1,1);
K20fit = polyval(K20line,K20conc);

plot(K20conc,K20fit,'k-','DisplayName','2020 - K 766.491')

hold on
errorbar(K20conc,K20int2,K20errx,K20erry2,'kx','MarkerSize',5,'CapSize',12,...
    'Linestyle','none', 'HandleVisibility','off') ;
hold on

K20line2 = polyfit(K20conc, K20int2,1);
K20fit2 = polyval(K20line2,K20conc);

plot(K20conc,K20fit2,'g-','DisplayName','2020 - K 769.897')

 
errorbar(K21conc,K21int1,K21errx,K21erry,'gx','MarkerSize',5,'CapSize',12,...
    'Linestyle','none', 'HandleVisibility','off') ;
hold on


K21line = polyfit(K21conc, K21int1,1);
K21fit = polyval(K21line,K21conc);


plot(K21conc,K21fit,'b-','DisplayName','2021 - K 766.491')

hold on
errorbar(K21conc,K21int2,K21errx,K21erry2,'bx','MarkerSize',5,'CapSize',12,...
    'Linestyle','none', 'HandleVisibility','off') ;
hold on


K21line2 = polyfit(K21conc, K21int2,1);
K21fit2 = polyval(K21line2,K21conc);

plot(K21conc,K21fit2,'c-','DisplayName','2021 - K 769.897')

Answer 1

[darova]

• Try semilogy
• Try legend

t = 0:0.1:10;
plot(t,sin(t),'.r')
line(t,sin(t))
line(t,cos(t),'marker','.','color','g')
line(t,cos(t),'color', 'm')
legend('curve1','curvw2', 'curve3','curve4')

[AAK]

Thanks so much for your help but unfortunately the lines have to be straight and not curved.