Zeros1 = [1 1];

Zeros2 = [1 2];

Zeros3 = [1 3];

Zeros4 = [1 4];

Zeros5 = [1 5];

Gs = tf(5,[1 1 5]);

Gs1 = tf(Zeros1,[1 1 5]) * 5;

Gs2 = tf(Zeros2,[1 1 5])*5/2;

Gs3 = tf(Zeros3,[1 1 5])*5/3;

Gs4 = tf(Zeros4,[1 1 5])*5/4;

Gs5 = tf(Zeros5,[1 1 5])*5/5;

step(Gs,Gs1,Gs2,Gs3,Gs4,Gs5)

legend('Original System G(s)','z = -1','z = -2','z = -3','z = -4','z = -5')