For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

Step-by-step explanation:

To find recursive formula in a geometric sequence, you need to first find the common ratio, 'r', between the numbers in the given data set.  From the data set given, it appears that the previous number is multiplied by so, r = .

Recursive formula involves two other variables:

the term in the sequence

=the term before the term

So, the final formula is:  

where is the figure

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.