Match the sequence (term) with the correct type of sequence (definition). term definition 2, 4, 6, 8, a. arithmetic, common difference is -4 28, 24, 20, 16, b. geometric, common ratio is 2 2, 4, 8, 16, c. arithmetic, common difference is 2 48, 24, 12, 6, d. geometric, common ratio is 0.5

In an arithmetic sequence common difference will be constant. Common difference is the difference of next term to it's previous term. Like

common difference: d = Second term - first term.

Similarly in geometric sequence common ratio will be constant.

Common ratio = Second term / first term.

I have attached the table of correct match pair.

Hope this helps you!

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.