How to plot (V2_1,V2_2,V2_3 ) in one figure?

cosphi = 0.8;

sinphi=0.6;

cosphi_1=1;

sinphi_1=0;

E2 = 250;

Req = 0.09375;

Xeq = 0.375;

for I2=1:40;

V2_1 = (E2-(I2*Req*cosphi - I2*Xeq*sinphi)); %Lagging

V2_2= (E2-(I2*Req*cosphi + I2*Xeq*sinphi)); %Leading

V2_3= (E2-(I2*Req*cosphi_1 - I2*Xeq*sinphi_1)); %unit

xlabel('I_{2} in ampere')

ylabel('load voltage v_{2} in volts')

legend('0.8 PF lagging','0.8 PF leading','1.0 PF');

end