Question

The tenth, eleventh, and twelfth terms of a sequence are shown in the table below:


Term number
10
11
12
Term
-34
-38
-42


Which of the following shows the first five terms of the sequence?
-2, 2, 6, 10, 14
2, -2, -6, -10, -14
-2, -6, -10, -14, -18
2, 6, 10, 14, 18

Answer 1

note that to get from one term to the next you subtract 4

Answer 2

?

Answer 3

-34 -4 = -38
-38-4 = -42

Answer 4

this is an arithmetic sequence where the common difference is -4

Answer 5

ok

Answer 6

so what do you think the 9th term is ?
you subtract 4 to get the 10th
so we can write -34 + 4 = a9
where a9 is the 9th term

Answer 7

-30

Answer 8

right now you can keep on adding 4 until you get to the 5the term and see if it matches one of the options

Answer 9

a

Answer 10

is the answer

Answer 11

no- you are guessing
8th term = -30 + 4 = -26
7th term = 26 + 4 = -22

- can you continue?

Answer 12

no I'm not i did kt

Answer 13

ok

Answer 14

-22+4=-18
-18+4=-14
-14+4=-10
-10+4=-6
-6+4=-2
-2+4=2

Answer 15

see

Answer 16

right
sorry!

Answer 17

:D i chose the wrong one(my mistake) it looks like c but is missing 2

Answer 18

you got there
its B

Answer 19

thank you

Answer 20

may you help me w. another?

Answer 21

@welshfella

Answer 22

ok