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Lesson details
Key learning points
- In this lesson, we will learn to find the nth term rule for descending arithmetic sequences using tables.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
Which column has the position-to-term rule 4n + 1?
A
B
D
Q2.
Which column has the position-to-term rule 4n - 1?
B
C
D
Q3.
Work out the position-to term-rules for column a.
5n + 11
5n + 6
6n + 1
Q4.
Work out the position-to term-rules for column b.
6n + 3
8n
8n + 14
Q5.
Work out position-to-term rules for the sequence 3, 7, 11, 15, 19, ...
3n
3n + 7
4n + 1
5 Questions
Q1.
What do we mean if we describe a sequence as "descending"?
The sequence is all negative numbers
The sequence is less important
Q2.
Which of the following is an example of a descending sequence?
-12, -10, -8, -6, ...
-5, -4, -3, -2, ...
3, 4, 5, 6, ...
Q3.
What is the nth term of 10, 8, 6, 4, 2, ...?
-2n + 8
2n + 12
2n + 8
Q4.
What is the nth term of -4, -7, -10, -13, ...?
-3n + 1
-4n + 7
3n - 7
Q5.
Find the first 5 terms of the sequence -5n + 2.
-5, -3, -1, 1, 3
-5, 2, 9, 18, 27
-7, -12, -17, -22, -27