Please help just a quick look im not sure with my reasoning - which of the following graphs could be a representation of a geometric sequence? CHECK ALL THAT APPLY

Question

Please help just a quick look im not sure with my reasoning  - which of the following graphs could be a representation of a geometric sequence? CHECK ALL THAT APPLY

anonymous · Answer

soooo i know that in a geometric the ration will double between each term therefore i think A is one of the answers


would B also be an answer since its the same type of graph but in a geometric sequence the ration can also be a negative therefore B is an answer too ????

anonymous · Answer

Any one what to do ??

anonymous · Answer

@phi @campbell_st Hi there i was wondering if you would help me with this problem?

phi · Answer

yes, A looks geometric.

but in general,  a geometric series has a fixed ratio between terms
in A the ratio is 2

but it could be any number.

phi · Answer

in B, the ratio looks like ½.  So that would also be geometric

anonymous · Answer

ohhh ok n_n so fixed number than .... yay .. would this two be the only ones?? @phi

anonymous · Answer

because the other ones are a line and an exponential

phi · Answer

yes.  c is a straight line, so definitely not that one
d looks like the graph of a log.

anonymous · Answer

ohhhhh ok then thank you soo A and B are it n_n -- thank you for explanining ! :) @phi