Question

Fiona has proved that a function, f(x), is an arithmetic sequence. How did she prove that?

A.) She showed that an explicit formula could be created.
B.) She showed that a recursive formula could be created.
C.) She showed that f(n) ÷ f(n − 1) was a constant ratio.
D.) She showed that f(n) − f(n − 1) was a constant difference.

Answer 1

b