The Baltimore Ravens won the American football championship in 2013. In the same season, the Kansas City Chiefs had a record of 2 wins and 14 losses.
The dot plots below show the 40-yard dash times (in seconds) of the defensive backs on each team's
roster. Defensive backs mainly defend against passes, and the 40-yard dash is the main measure of speed
used in American football

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.