MATLAB: Simple plotting in matlab

plotting

x=1:1:30 h=70 y=h/x

i understand they are unequal in length but how would i plot it dividing 70 by x one at a time to plot

x=1:1:30
h=70
y=h./x
plot(x,y)

You should look up the plot function:

 incr = 0.1;
 x = [1:incr:20];
 y = (1-x).^-1
 plot(x,y)

Like Star Strider said, check the documentation

[AX,H1,H2] = plotyy(x,y1,x,y2,'plot');

set(H1,'LineWidth',1); %First graph

set(H2,'LineWidth',3); %Second graph