Quadratic sequences

12 questions

1. Which of these could be the first 5 terms of a quadratic sequence?
2. Match the first 5 terms of these quadratic sequences to their common second differences.
3. Which is the correct n^\text{th} term rule for the quadratic sequence which starts: 3, 6, 11, 18, 27, ...?
4. The quadratic sequence which starts: 13, 16, 21, 28, ... has n^\text{th} term rule n^2 + ___
5. What is the n^\text{th} term of the linear sequence which starts -1, -2, -3, -4, ... ?
6. What is the n^\text{th} term of the linear sequence which starts -1, 2, 5, 8, ... ?
7. Which two sequences from the options below could be added to make the quadratic sequence which starts: 3, 7, 13, 21, ...?
8. Which two sequences from the options below could be added to make the quadratic sequence which starts: 3, 7, 15, 27, ...?
9. What is the correct n^\text{th} term rule for the quadratic sequence which starts 3, 3, 5, 9, 15, ...?
10. The n^\text{th} term rule for the quadratic sequence 4, 9, 16, 25, ... is n^2 + ___n + 1
11. What is the correct n^\text{th} term rule for the quadratic sequence which starts -3, 1, 11, 27, 49, ... ?
12. What is the correct n^\text{th} term rule for the quadratic sequence which starts -1, -6, -15, -28, -45, ... ?

License: OGL