We've all seen those celebrity couples whose age difference is a little creepy. But how much of a difference is okay? The popular rule of thumb says that the youngest person you should date is seven years older than half your age. For instance, when Demi Moore was 42, anyone younger than 28 would be considered creepy... which didn't stop her from marrying 25-year-old Ashton Kutcher!
In this lesson, students use linear relationships to examine the May-December romance and ask whether the Half Plus Seven
rule (and its inverse, Minus Seven Times Two
) is a good one. When dating, how young is too young? And how old is too old?