How come I can't plot this?

x1=0:100:1000;
y1=0;
x2=1000:100:2014.85;
y2=((2014.85/2106.91)*x);
x3=2014.85:100:4029.7;
y3=(-2014.85/2106.91)*x+616;

x=[x1 x2 x3];
y=[y1 y2 y3];
plot(x,y)

%I receive this error:

Error using plot
Vectors must be the same length.

Error in MacLab2 (line 29)
plot(x,y)

%How do I fix this error?

Answer 1

[Walter Roberson]

x1=0:100:1000;
y1=zeros(size(x1));
x2=1000:100:2014.85;
y2=((2014.85/2106.91)*x2);
x3=2014.85:100:4029.7;
y3=(-2014.85/2106.91)*x3+616;

x=[x1 x2 x3];
y=[y1 y2 y3];
plot(x,y)