For many metals, deformation changes their physical properties. In a process called cold work, metal is intentionally deformed to make it stronger. The following data tabulate both the strength and ductility of a metal that has been cold worked to different amounts:

Percent Cold Work (%)	Yield Strength (MPa)	Ductility (%)
10	275	43
15	310	30
20	340	23
25	360	17
30	375	12
40	390	7
50	400	4
60	407	3
68	410	2

Using a script .m file:

1.Create vectors for these data.

2.Plot these data on a single rectilinear x-y grid with two y-axes.

3.Label the title, x-axis (Percent Cold Work), and both y-axes.

4.Change yield stress to red dashed lines and ductility to blue dotted lines

5.Add a legend.

So far this is the code that I have. What im having trouble with is setting the yield stress to red dashed lines and ductility to blue dotted lines.

%PCW is percent cold work

%YS is yield strength in MPa

%D is ductility percent

clc, clear

PCW = [10,15,20,25,30,40,50,60,68];

YS = [275,310,340,360,375,390,400,407,410];

D = [43,30,23,17,12,7,4,3,2];

a = plotyy(PCW,YS,PCW,D);

title('Strength and Ductility')

xlabel('Percent Cold Work')

ylabel('Yield Strength, MPa');

ylabel(a(2),'Ductility,%');

legend('PCW vs YS','PCW vs D');