Which situation is NOT a linear function?

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16