Write a rule for the sequence
8, -1, -10, -19...
A. Start with 8 and add -9 repeatedly
B. star with -9 and add 8 repeatedly
c. start with 8 and add 9 repeatedly
D. start with 8 and subtract -9 repeatedly
i think it is b.
I disagree.
I don't understand how this stuff works could you explain it a little too me? :/
8 + (-9) = -1
-1 + (-9) = -10
Take it from there.
Thanks!
To determine the rule for the given sequence 8, -1, -10, -19..., we need to observe the pattern in the numbers.
If we look at the difference between consecutive terms, we can see that:
-1 - 8 = -9
-10 - (-1) = -9
-19 - (-10) = -9
This shows that there is a constant difference of -9 between each term.
So, to find the next term in the sequence, we need to subtract -9 from the previous term.
Now let's analyze the options:
A. "Start with 8 and add -9 repeatedly": This option is incorrect because it suggests adding -9, whereas the pattern shows that we subtract -9.
B. "Start with -9 and add 8 repeatedly": This option is incorrect because it suggests adding 8, which is not consistent with the pattern.
C. "Start with 8 and add 9 repeatedly": This option is incorrect because it suggests adding 9, which is not the correct difference based on the pattern.
D. "Start with 8 and subtract -9 repeatedly": This option is correct because it aligns with the pattern, subtracting -9 from each term.
Therefore, the correct answer is D.