Which sequence have a common ratio of 1/3 choose two answers.

The common ratio is the number u multiply each term by to get to the next term

common ratio of 1/3

-9 * 1/3 = -9/3 = -3so it is not the first one because the number after 9 in ur data is 3. not -3

-1/2 * 1/3 = -1/6-1/6 * 1/3 = -1/18this is one...because if u keep multiplying by 1/3, it matches the data

900 * 1/3 = 900/3 = 300300 * 1/3 = 300/3 = 100...this is one as well

100 * 1/3 = 100/3 = 33.3...this is not one

so ur answers are : the 2nd and 3rd one

Aline graph should be used