function twoplot(t,y)

subplot(2,1,1);
plot(t,y(:,1));
xlabel('TIME (SECONDS)');
ylabel('Y_1(t) (METERS)');
grid on;
subplot(2,1,2);
plot(t,y(:,2));
xlabel('TIME (SECONDS)');
ylabel('Y_2(t) (METERS)');
grid on;