Time (in minutes) Number of Problems in Set
The time it took Tanya to complete different sets of math problems varied directly with the number of problems in the set. Tanya’s data is shown in the table. If x = time, and y = the number of problems in the set, which equation models Tanya’s direct variation?
A) y = 12x
B) y = 1.2x
C) y = x + 12
D) y = x + 1.2