Is it possible that you could get an answer that checks and works in one equation and does not work in the other equation?

Yes.

Step-by-step explanation:

Ok so I'm a little confused about your question. But there is such thing as a one solution equation no solution equations and infinity solution equation here are some examples.

One solution equation: Consistent, Independent. EX. X=4

Infinity solution equation: Consistent, dependent. EX. 2=5

No solution equation: Inconsistent, Independent. EX. 0=0

I hope this helped!

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

the answer is a if my teacher taught me correct