function ortsk
t=-1:0.1:3.5;
z=0.8+j*t;
z1=0.8*t+0.8j

axis equal, axis([-0.5 2.5 -1 1.5]), xlabel('Re(z)'), ylabel('Im(z)'), hold on,grid on,
x=-0.5:0.1:2.5;
y=0.8;
plot(z,'-');
plot(z1,'-');