Direct Variations

1. The distance (d) an airplane flies to the time (t) travelling

1. The age (a) of used car to its resale value (r)

1. The amount of money (m) raised in a concert to the number of tickets (t) sold

1. The time (t) a teacher spends checking papers to the number of students (s)

1. The number of persons (p) sharing a pie to the size of the slices (s) of the pie.