Question

The first five terms of a sequence are shown below.

6, 9, 12, 15, 18

If the nth term of this sequence is represented by f(n), which of the following functions best represents this sequence?

f(n) = 6n - 3; n ≥ 1

f(n) = 6n + 3; n ≥ 1

f(n) = 3n + 3; n ≥ 1

f(n) = 3n - 3; n ≥ 1

Answer 1

wats your guess ?

Answer 2

The third

Answer 3

thats a very good guess :)

Answer 4

Cuz if you say 3n+3 when n is 1 then it's 6 if you say 3n+3 when n is 2 it is 9

Answer 5

Brilliant !!

6, 9, 12, 15, 18

slope = 3 here
and since first term is 6

3n + 3 is ur expression :)

Answer 6

:)

Answer 7

good job!
btw we're talking about slope, cuz you have been doing straight line equations...