Question

Write a formula for this sequence: 8, -1, -10, -19,...

Answer 1

It degrees by 9 each time, I call this the slope

m = -9

If there was a number before the 8, it would be 8 + 9 = 17, I call this the y-intercept so we have

y = -9x + 17

where x represents the placement of the term and y represents the term value

Answer 2

y=-9x+17, same here xD

Answer 3

any easy logic?

Answer 4

did you see my slope logic?

Answer 5

ya,...but it is graphical

Answer 6

Sequences:
Formula: Un=U1+(n-1)d
U1=8
d=-9
Un=8-9(n-1)
Un=-9n+17
If you don't understand the formula, maybe try looking at this: http://jwilson.coe.uga.edu/EMAT6680Fa06/Crumley/Sequences/Sequences1.html

Answer 7

hey thats easy

Answer 8

was the explanation not needed? :S sry if it was :(

Answer 9

hey no.....u diid help a lot

Answer 10

oh, ok :) that's good