Expressing an arithmetic sequence | Maths | Quizalize & Oak National Academy

Starter quiz

In sequences, a position-to-term rule describes what?
- How to generate the term from the term number. ✓
- How many terms there are in a sequence.
- How many positions there are in a sequence.
Multiplying $x$ by 4 and subtracting 7 is most simply written as which expression?
- $x \times 4 - 7$
- $x \times -7 + 4$
- $4 + x - 7$
- $4x - 7$ ✓
Which position-to-term rule satisfies this sequence?
- Add 3 each time.
- Starts at 1 and counts up in 3.
- Multiply by 3 and add 1
- Multiply by 3 and subtract 2 ✓
Which position-to-term rule links the pattern number to the number of squares?
- Multiply the pattern number by 4.
- Multiply the pattern number by 3 then add 1. ✓
- Add 3 to the pattern number.
- Multiply the pattern number by 3 then subtract 1.
For the arithmetic sequence starting 1, 4, 9, 13, 17, ... the position-to-term rule is 'multiply by 3 and subtract 2'. What therefore, is the 100 $^\text{th}$ term?
- 300
- 302
- 298 ✓
- 98
Substitute the value $a=6$ into the below expressions. Order the value of the expressions from highest to lowest.
- 1
  
  ⇔
  
  $3a-7$
- 2
  
  ⇔
  
  $2a-3$
- 3
  
  ⇔
  
  $7-a$
- 4
  
  ⇔
  
  $17-3a$