Algebra

Question 1

What is the first thing to look for when finding an Nth term?

Answer 1

How you get from one number to the next.

This is called a difference.

Question 2

Why should you find the difference when you are trying to write a nth term?

Answer 2

If the difference is constant ( the same value ) it is linking the terms in the sequence to a times table.

Question 3

How do you square a value?

Answer 3

Multiply it by itself

Question 4

What would be the fourth term in the sequence with the rule: 3n - 2 ?

Answer 4

You must substitute n for the value 4.
So multiply 3x4 then subtract 2.
Solution is 10

Question 5

What is the rule for this sequence?

9, 11, 13, 15, 17 …..

Answer 5

The sequence is odd, and increasing 2 each time.
So compare with 2,4,6,8,10 which is 2n.
I need 9 so I add 7. I do this each time
Solution 2n + 7

Question 6

How would you find the answer to

x(3x-4)?

Answer 6

Multiply x by 3x, then multiply x by -4.

Solution is 3x^2 - 4x

Question 7

How do you solve 5x + 6 = 36

Answer 7

Take 6 from 36 to get 30, then divide 30 by 5 to get 6.