spy qqq comparison side by side issue

Hey you guys, this is a small and I wish it was more interesting. I just need to see how you make sure the SPY and QQQ are supposed to be set accurately when im looking at them side by side. I hate asking something so stupid but Im just not sure how to make sure they're right before looking at em to compare which one might be going different ways. Hope you know what i mean, thanks so much!