Question

the following is a geometric sequence ? -1 , -3 , -9 , -28

Answer 1

true
false

Answer 2

mmm I'm not sure

Answer 3

@kathydimieri12 can you show me an example of how you would figure it out even if you dont know the answer because i'm completely lost on how to even start on a problem like this .

Answer 4

okay

Answer 5

in a geometric series, each term gets multiplied by a constant to get the next term

so, to see whether this is a geometric series, we test every number to see if that pattern applies

Answer 6

what number do we have to multiply to go from

-1 to -3?

Answer 7

@Vocaloid 3 right ?

Answer 8

good

Answer 9

perfect yes^

Answer 10

what number do we have to multiply to go from

-3 to -9?

Answer 11

3 okay now i see @Vocaloid but it would still be false because -9 * 3 = -27 not -28.

Answer 12

yes! that is correct

Answer 13

@Vocaloid thank you !